873 lines
20 KiB
LLVM
873 lines
20 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout = "e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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define i1 @lshr_eq_msb_low_last_zero(i8 %a) {
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; CHECK-LABEL: @lshr_eq_msb_low_last_zero(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i8 [[A:%.*]], 6
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr i8 127, %a
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%cmp = icmp eq i8 %shr, 0
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ret i1 %cmp
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}
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define <2 x i1> @lshr_eq_msb_low_last_zero_vec(<2 x i8> %a) {
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; CHECK-LABEL: @lshr_eq_msb_low_last_zero_vec(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt <2 x i8> [[A:%.*]], <i8 6, i8 6>
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; CHECK-NEXT: ret <2 x i1> [[CMP]]
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;
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%shr = lshr <2 x i8> <i8 127, i8 127>, %a
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%cmp = icmp eq <2 x i8> %shr, zeroinitializer
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ret <2 x i1> %cmp
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}
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define i1 @ashr_eq_msb_low_second_zero(i8 %a) {
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; CHECK-LABEL: @ashr_eq_msb_low_second_zero(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i8 [[A:%.*]], 6
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = ashr i8 127, %a
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%cmp = icmp eq i8 %shr, 0
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ret i1 %cmp
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}
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define i1 @lshr_ne_msb_low_last_zero(i8 %a) {
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; CHECK-LABEL: @lshr_ne_msb_low_last_zero(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i8 [[A:%.*]], 7
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr i8 127, %a
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%cmp = icmp ne i8 %shr, 0
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ret i1 %cmp
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}
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define i1 @ashr_ne_msb_low_second_zero(i8 %a) {
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; CHECK-LABEL: @ashr_ne_msb_low_second_zero(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i8 [[A:%.*]], 7
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = ashr i8 127, %a
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%cmp = icmp ne i8 %shr, 0
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ret i1 %cmp
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}
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define i1 @ashr_eq_both_equal(i8 %a) {
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; CHECK-LABEL: @ashr_eq_both_equal(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = ashr i8 128, %a
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%cmp = icmp eq i8 %shr, 128
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ret i1 %cmp
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}
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define i1 @ashr_ne_both_equal(i8 %a) {
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; CHECK-LABEL: @ashr_ne_both_equal(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[A:%.*]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = ashr i8 128, %a
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%cmp = icmp ne i8 %shr, 128
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ret i1 %cmp
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}
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define i1 @lshr_eq_both_equal(i8 %a) {
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; CHECK-LABEL: @lshr_eq_both_equal(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr i8 127, %a
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%cmp = icmp eq i8 %shr, 127
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ret i1 %cmp
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}
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define i1 @lshr_ne_both_equal(i8 %a) {
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; CHECK-LABEL: @lshr_ne_both_equal(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[A:%.*]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr i8 127, %a
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%cmp = icmp ne i8 %shr, 127
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ret i1 %cmp
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}
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define i1 @exact_ashr_eq_both_equal(i8 %a) {
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; CHECK-LABEL: @exact_ashr_eq_both_equal(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = ashr exact i8 128, %a
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%cmp = icmp eq i8 %shr, 128
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ret i1 %cmp
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}
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define i1 @exact_ashr_ne_both_equal(i8 %a) {
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; CHECK-LABEL: @exact_ashr_ne_both_equal(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[A:%.*]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = ashr exact i8 128, %a
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%cmp = icmp ne i8 %shr, 128
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ret i1 %cmp
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}
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define i1 @exact_lshr_eq_both_equal(i8 %a) {
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; CHECK-LABEL: @exact_lshr_eq_both_equal(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr exact i8 126, %a
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%cmp = icmp eq i8 %shr, 126
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ret i1 %cmp
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}
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define i1 @exact_lshr_ne_both_equal(i8 %a) {
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; CHECK-LABEL: @exact_lshr_ne_both_equal(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[A:%.*]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr exact i8 126, %a
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%cmp = icmp ne i8 %shr, 126
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ret i1 %cmp
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}
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define i1 @exact_lshr_eq_opposite_msb(i8 %a) {
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; CHECK-LABEL: @exact_lshr_eq_opposite_msb(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], 7
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr exact i8 -128, %a
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%cmp = icmp eq i8 %shr, 1
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ret i1 %cmp
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}
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define i1 @lshr_eq_opposite_msb(i8 %a) {
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; CHECK-LABEL: @lshr_eq_opposite_msb(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], 7
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr i8 -128, %a
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%cmp = icmp eq i8 %shr, 1
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ret i1 %cmp
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}
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define i1 @exact_lshr_ne_opposite_msb(i8 %a) {
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; CHECK-LABEL: @exact_lshr_ne_opposite_msb(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[A:%.*]], 7
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr exact i8 -128, %a
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%cmp = icmp ne i8 %shr, 1
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ret i1 %cmp
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}
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define i1 @lshr_ne_opposite_msb(i8 %a) {
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; CHECK-LABEL: @lshr_ne_opposite_msb(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[A:%.*]], 7
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr i8 -128, %a
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%cmp = icmp ne i8 %shr, 1
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ret i1 %cmp
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}
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define i1 @exact_ashr_eq(i8 %a) {
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; CHECK-LABEL: @exact_ashr_eq(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], 7
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = ashr exact i8 -128, %a
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%cmp = icmp eq i8 %shr, -1
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ret i1 %cmp
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}
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define i1 @exact_ashr_ne(i8 %a) {
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; CHECK-LABEL: @exact_ashr_ne(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[A:%.*]], 7
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = ashr exact i8 -128, %a
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%cmp = icmp ne i8 %shr, -1
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ret i1 %cmp
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}
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define i1 @exact_lshr_eq(i8 %a) {
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; CHECK-LABEL: @exact_lshr_eq(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], 2
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr exact i8 4, %a
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%cmp = icmp eq i8 %shr, 1
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ret i1 %cmp
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}
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define i1 @exact_lshr_ne(i8 %a) {
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; CHECK-LABEL: @exact_lshr_ne(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[A:%.*]], 2
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr exact i8 4, %a
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%cmp = icmp ne i8 %shr, 1
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ret i1 %cmp
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}
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define i1 @nonexact_ashr_eq(i8 %a) {
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; CHECK-LABEL: @nonexact_ashr_eq(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], 7
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = ashr i8 -128, %a
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%cmp = icmp eq i8 %shr, -1
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ret i1 %cmp
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}
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define i1 @nonexact_ashr_ne(i8 %a) {
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; CHECK-LABEL: @nonexact_ashr_ne(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[A:%.*]], 7
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = ashr i8 -128, %a
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%cmp = icmp ne i8 %shr, -1
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ret i1 %cmp
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}
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define i1 @nonexact_lshr_eq(i8 %a) {
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; CHECK-LABEL: @nonexact_lshr_eq(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], 2
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr i8 4, %a
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%cmp = icmp eq i8 %shr, 1
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ret i1 %cmp
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}
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define i1 @nonexact_lshr_ne(i8 %a) {
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; CHECK-LABEL: @nonexact_lshr_ne(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[A:%.*]], 2
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr i8 4, %a
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%cmp = icmp ne i8 %shr, 1
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ret i1 %cmp
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}
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define i1 @exact_lshr_eq_exactdiv(i8 %a) {
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; CHECK-LABEL: @exact_lshr_eq_exactdiv(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], 4
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr exact i8 80, %a
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%cmp = icmp eq i8 %shr, 5
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ret i1 %cmp
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}
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define i1 @exact_lshr_ne_exactdiv(i8 %a) {
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; CHECK-LABEL: @exact_lshr_ne_exactdiv(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[A:%.*]], 4
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr exact i8 80, %a
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%cmp = icmp ne i8 %shr, 5
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ret i1 %cmp
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}
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define i1 @nonexact_lshr_eq_exactdiv(i8 %a) {
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; CHECK-LABEL: @nonexact_lshr_eq_exactdiv(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], 4
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr i8 80, %a
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%cmp = icmp eq i8 %shr, 5
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ret i1 %cmp
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}
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define i1 @nonexact_lshr_ne_exactdiv(i8 %a) {
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; CHECK-LABEL: @nonexact_lshr_ne_exactdiv(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[A:%.*]], 4
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = lshr i8 80, %a
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%cmp = icmp ne i8 %shr, 5
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ret i1 %cmp
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}
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define i1 @exact_ashr_eq_exactdiv(i8 %a) {
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; CHECK-LABEL: @exact_ashr_eq_exactdiv(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], 4
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = ashr exact i8 -80, %a
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%cmp = icmp eq i8 %shr, -5
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ret i1 %cmp
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}
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define i1 @exact_ashr_ne_exactdiv(i8 %a) {
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; CHECK-LABEL: @exact_ashr_ne_exactdiv(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[A:%.*]], 4
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = ashr exact i8 -80, %a
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%cmp = icmp ne i8 %shr, -5
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ret i1 %cmp
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}
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define i1 @nonexact_ashr_eq_exactdiv(i8 %a) {
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; CHECK-LABEL: @nonexact_ashr_eq_exactdiv(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], 4
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = ashr i8 -80, %a
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%cmp = icmp eq i8 %shr, -5
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ret i1 %cmp
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}
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define i1 @nonexact_ashr_ne_exactdiv(i8 %a) {
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; CHECK-LABEL: @nonexact_ashr_ne_exactdiv(
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[A:%.*]], 4
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%shr = ashr i8 -80, %a
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%cmp = icmp ne i8 %shr, -5
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ret i1 %cmp
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}
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define i1 @exact_lshr_eq_noexactdiv(i8 %a) {
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; CHECK-LABEL: @exact_lshr_eq_noexactdiv(
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; CHECK-NEXT: ret i1 false
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;
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%shr = lshr exact i8 80, %a
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%cmp = icmp eq i8 %shr, 31
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ret i1 %cmp
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}
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define i1 @exact_lshr_ne_noexactdiv(i8 %a) {
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; CHECK-LABEL: @exact_lshr_ne_noexactdiv(
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; CHECK-NEXT: ret i1 true
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;
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%shr = lshr exact i8 80, %a
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%cmp = icmp ne i8 %shr, 31
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ret i1 %cmp
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}
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define i1 @nonexact_lshr_eq_noexactdiv(i8 %a) {
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; CHECK-LABEL: @nonexact_lshr_eq_noexactdiv(
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; CHECK-NEXT: ret i1 false
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;
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%shr = lshr i8 80, %a
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%cmp = icmp eq i8 %shr, 31
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ret i1 %cmp
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}
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define i1 @nonexact_lshr_ne_noexactdiv(i8 %a) {
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; CHECK-LABEL: @nonexact_lshr_ne_noexactdiv(
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; CHECK-NEXT: ret i1 true
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;
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%shr = lshr i8 80, %a
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%cmp = icmp ne i8 %shr, 31
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ret i1 %cmp
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}
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define i1 @exact_ashr_eq_noexactdiv(i8 %a) {
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; CHECK-LABEL: @exact_ashr_eq_noexactdiv(
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; CHECK-NEXT: ret i1 false
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;
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%shr = ashr exact i8 -80, %a
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%cmp = icmp eq i8 %shr, -31
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ret i1 %cmp
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}
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||
|
|
||
|
define i1 @exact_ashr_ne_noexactdiv(i8 %a) {
|
||
|
; CHECK-LABEL: @exact_ashr_ne_noexactdiv(
|
||
|
; CHECK-NEXT: ret i1 true
|
||
|
;
|
||
|
%shr = ashr exact i8 -80, %a
|
||
|
%cmp = icmp ne i8 %shr, -31
|
||
|
ret i1 %cmp
|
||
|
}
|
||
|
|
||
|
define i1 @nonexact_ashr_eq_noexactdiv(i8 %a) {
|
||
|
; CHECK-LABEL: @nonexact_ashr_eq_noexactdiv(
|
||
|
; CHECK-NEXT: ret i1 false
|
||
|
;
|
||
|
%shr = ashr i8 -80, %a
|
||
|
%cmp = icmp eq i8 %shr, -31
|
||
|
ret i1 %cmp
|
||
|
}
|
||
|
|
||
|
define i1 @nonexact_ashr_ne_noexactdiv(i8 %a) {
|
||
|
; CHECK-LABEL: @nonexact_ashr_ne_noexactdiv(
|
||
|
; CHECK-NEXT: ret i1 true
|
||
|
;
|
||
|
%shr = ashr i8 -80, %a
|
||
|
%cmp = icmp ne i8 %shr, -31
|
||
|
ret i1 %cmp
|
||
|
}
|
||
|
|
||
|
define i1 @nonexact_lshr_eq_noexactlog(i8 %a) {
|
||
|
; CHECK-LABEL: @nonexact_lshr_eq_noexactlog(
|
||
|
; CHECK-NEXT: ret i1 false
|
||
|
;
|
||
|
%shr = lshr i8 90, %a
|
||
|
%cmp = icmp eq i8 %shr, 30
|
||
|
ret i1 %cmp
|
||
|
}
|
||
|
|
||
|
define i1 @nonexact_lshr_ne_noexactlog(i8 %a) {
|
||
|
; CHECK-LABEL: @nonexact_lshr_ne_noexactlog(
|
||
|
; CHECK-NEXT: ret i1 true
|
||
|
;
|
||
|
%shr = lshr i8 90, %a
|
||
|
%cmp = icmp ne i8 %shr, 30
|
||
|
ret i1 %cmp
|
||
|
}
|
||
|
|
||
|
define i1 @nonexact_ashr_eq_noexactlog(i8 %a) {
|
||
|
; CHECK-LABEL: @nonexact_ashr_eq_noexactlog(
|
||
|
; CHECK-NEXT: ret i1 false
|
||
|
;
|
||
|
%shr = ashr i8 -90, %a
|
||
|
%cmp = icmp eq i8 %shr, -30
|
||
|
ret i1 %cmp
|
||
|
}
|
||
|
|
||
|
define i1 @nonexact_ashr_ne_noexactlog(i8 %a) {
|
||
|
; CHECK-LABEL: @nonexact_ashr_ne_noexactlog(
|
||
|
; CHECK-NEXT: ret i1 true
|
||
|
;
|
||
|
%shr = ashr i8 -90, %a
|
||
|
%cmp = icmp ne i8 %shr, -30
|
||
|
ret i1 %cmp
|
||
|
}
|
||
|
|
||
|
; Don't try to fold the entire body of function @PR20945 into a
|
||
|
; single `ret i1 true` statement.
|
||
|
; If %B is equal to 1, then this function would return false.
|
||
|
; As a consequence, the instruction combiner is not allowed to fold %cmp
|
||
|
; to 'true'. Instead, it should replace %cmp with a simpler comparison
|
||
|
; between %B and 1.
|
||
|
|
||
|
define i1 @PR20945(i32 %B) {
|
||
|
; CHECK-LABEL: @PR20945(
|
||
|
; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[B:%.*]], 1
|
||
|
; CHECK-NEXT: ret i1 [[CMP]]
|
||
|
;
|
||
|
%shr = ashr i32 -9, %B
|
||
|
%cmp = icmp ne i32 %shr, -5
|
||
|
ret i1 %cmp
|
||
|
}
|
||
|
|
||
|
define i1 @PR21222(i32 %B) {
|
||
|
; CHECK-LABEL: @PR21222(
|
||
|
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[B:%.*]], 6
|
||
|
; CHECK-NEXT: ret i1 [[CMP]]
|
||
|
;
|
||
|
%shr = ashr i32 -93, %B
|
||
|
%cmp = icmp eq i32 %shr, -2
|
||
|
ret i1 %cmp
|
||
|
}
|
||
|
|
||
|
define i1 @PR24873(i64 %V) {
|
||
|
; CHECK-LABEL: @PR24873(
|
||
|
; CHECK-NEXT: [[ICMP:%.*]] = icmp ugt i64 [[V:%.*]], 61
|
||
|
; CHECK-NEXT: ret i1 [[ICMP]]
|
||
|
;
|
||
|
%ashr = ashr i64 -4611686018427387904, %V
|
||
|
%icmp = icmp eq i64 %ashr, -1
|
||
|
ret i1 %icmp
|
||
|
}
|
||
|
|
||
|
declare void @foo(i32)
|
||
|
|
||
|
define i1 @exact_multiuse(i32 %x) {
|
||
|
; CHECK-LABEL: @exact_multiuse(
|
||
|
; CHECK-NEXT: [[SH:%.*]] = lshr exact i32 [[X:%.*]], 7
|
||
|
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X]], 131072
|
||
|
; CHECK-NEXT: call void @foo(i32 [[SH]])
|
||
|
; CHECK-NEXT: ret i1 [[CMP]]
|
||
|
;
|
||
|
%sh = lshr exact i32 %x, 7
|
||
|
%cmp = icmp eq i32 %sh, 1024
|
||
|
call void @foo(i32 %sh)
|
||
|
ret i1 %cmp
|
||
|
}
|
||
|
|
||
|
declare void @foo2(<2 x i32>)
|
||
|
define <2 x i1> @exact_eq0_multiuse(<2 x i32> %x, <2 x i32> %y) {
|
||
|
; CHECK-LABEL: @exact_eq0_multiuse(
|
||
|
; CHECK-NEXT: [[SH:%.*]] = ashr exact <2 x i32> [[X:%.*]], [[Y:%.*]]
|
||
|
; CHECK-NEXT: [[CMP:%.*]] = icmp eq <2 x i32> [[SH]], zeroinitializer
|
||
|
; CHECK-NEXT: call void @foo2(<2 x i32> [[SH]])
|
||
|
; CHECK-NEXT: ret <2 x i1> [[CMP]]
|
||
|
;
|
||
|
%sh = ashr exact <2 x i32> %x, %y
|
||
|
%cmp = icmp eq <2 x i32> %sh, zeroinitializer
|
||
|
call void @foo2(<2 x i32> %sh)
|
||
|
ret <2 x i1> %cmp
|
||
|
}
|
||
|
|
||
|
; Verify conversions of ashr+icmp to a sign-bit test.
|
||
|
|
||
|
; negative test, but different transform possible
|
||
|
|
||
|
define i1 @ashr_ugt_0(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_0(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp ugt i4 [[X:%.*]], 1
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 0 ; 0b0000
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test
|
||
|
|
||
|
define i1 @ashr_ugt_1(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_1(
|
||
|
; CHECK-NEXT: [[S:%.*]] = ashr i4 [[X:%.*]], 1
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp ugt i4 [[S]], 1
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 1 ; 0b0001
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test
|
||
|
|
||
|
define i1 @ashr_ugt_2(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_2(
|
||
|
; CHECK-NEXT: [[S:%.*]] = ashr i4 [[X:%.*]], 1
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp ugt i4 [[S]], 2
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 2 ; 0b0010
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test
|
||
|
; TODO: This is a sign-bit test, but we don't recognize the pattern.
|
||
|
|
||
|
define i1 @ashr_ugt_3(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_3(
|
||
|
; CHECK-NEXT: [[S:%.*]] = ashr i4 [[X:%.*]], 1
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp ugt i4 [[S]], 3
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 3 ; 0b0011
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ugt_4(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_4(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp slt i4 [[X:%.*]], 0
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 4 ; 0b0100
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ugt_5(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_5(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp slt i4 [[X:%.*]], 0
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 5 ; 0b0101
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ugt_6(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_6(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp slt i4 [[X:%.*]], 0
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 6 ; 0b0110
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ugt_7(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_7(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp slt i4 [[X:%.*]], 0
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 7 ; 0b0111
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ugt_8(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_8(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp slt i4 [[X:%.*]], 0
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 8 ; 0b1000
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ugt_9(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_9(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp slt i4 [[X:%.*]], 0
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 9 ; 0b1001
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ugt_10(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_10(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp slt i4 [[X:%.*]], 0
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 10 ; 0b1010
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ugt_11(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_11(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp slt i4 [[X:%.*]], 0
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 11 ; 0b1011
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test
|
||
|
|
||
|
define i1 @ashr_ugt_12(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_12(
|
||
|
; CHECK-NEXT: [[S:%.*]] = ashr i4 [[X:%.*]], 1
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp ugt i4 [[S]], -4
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 12 ; 0b1100
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test
|
||
|
|
||
|
define i1 @ashr_ugt_13(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_13(
|
||
|
; CHECK-NEXT: [[S:%.*]] = ashr i4 [[X:%.*]], 1
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp ugt i4 [[S]], -3
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 13 ; 0b1101
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test, but different transform possible
|
||
|
|
||
|
define i1 @ashr_ugt_14(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_14(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp ugt i4 [[X:%.*]], -3
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 14 ; 0b1110
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test, but simplifies
|
||
|
|
||
|
define i1 @ashr_ugt_15(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ugt_15(
|
||
|
; CHECK-NEXT: ret i1 false
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ugt i4 %s, 15 ; 0b1111
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test, but simplifies
|
||
|
|
||
|
define i1 @ashr_ult_0(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_0(
|
||
|
; CHECK-NEXT: ret i1 false
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 0 ; 0b0000
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test, but different transform possible
|
||
|
|
||
|
define i1 @ashr_ult_1(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_1(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp ult i4 [[X:%.*]], 2
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 1 ; 0b0001
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test
|
||
|
|
||
|
define i1 @ashr_ult_2(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_2(
|
||
|
; CHECK-NEXT: [[S:%.*]] = ashr i4 [[X:%.*]], 1
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp ult i4 [[S]], 2
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 2 ; 0b0010
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test
|
||
|
|
||
|
define i1 @ashr_ult_3(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_3(
|
||
|
; CHECK-NEXT: [[S:%.*]] = ashr i4 [[X:%.*]], 1
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp ult i4 [[S]], 3
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 3 ; 0b0011
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ult_4(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_4(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp sgt i4 [[X:%.*]], -1
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 4 ; 0b0100
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ult_5(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_5(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp sgt i4 [[X:%.*]], -1
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 5 ; 0b0101
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ult_6(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_6(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp sgt i4 [[X:%.*]], -1
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 6 ; 0b0110
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ult_7(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_7(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp sgt i4 [[X:%.*]], -1
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 7 ; 0b0111
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ult_8(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_8(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp sgt i4 [[X:%.*]], -1
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 8 ; 0b1000
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ult_9(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_9(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp sgt i4 [[X:%.*]], -1
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 9 ; 0b1001
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ult_10(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_10(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp sgt i4 [[X:%.*]], -1
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 10 ; 0b1010
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
define i1 @ashr_ult_11(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_11(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp sgt i4 [[X:%.*]], -1
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 11 ; 0b1011
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test
|
||
|
; TODO: This is a sign-bit test, but we don't recognize the pattern.
|
||
|
|
||
|
define i1 @ashr_ult_12(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_12(
|
||
|
; CHECK-NEXT: [[S:%.*]] = ashr i4 [[X:%.*]], 1
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp ult i4 [[S]], -4
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 12 ; 0b1100
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test
|
||
|
|
||
|
define i1 @ashr_ult_13(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_13(
|
||
|
; CHECK-NEXT: [[S:%.*]] = ashr i4 [[X:%.*]], 1
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp ult i4 [[S]], -3
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 13 ; 0b1101
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test
|
||
|
|
||
|
define i1 @ashr_ult_14(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_14(
|
||
|
; CHECK-NEXT: [[S:%.*]] = ashr i4 [[X:%.*]], 1
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp ult i4 [[S]], -2
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 14 ; 0b1110
|
||
|
ret i1 %r
|
||
|
}
|
||
|
|
||
|
; negative test, but different transform possible
|
||
|
|
||
|
define i1 @ashr_ult_15(i4 %x) {
|
||
|
; CHECK-LABEL: @ashr_ult_15(
|
||
|
; CHECK-NEXT: [[R:%.*]] = icmp ult i4 [[X:%.*]], -2
|
||
|
; CHECK-NEXT: ret i1 [[R]]
|
||
|
;
|
||
|
%s = ashr i4 %x, 1
|
||
|
%r = icmp ult i4 %s, 15 ; 0b1111
|
||
|
ret i1 %r
|
||
|
}
|