510 lines
16 KiB
LLVM
510 lines
16 KiB
LLVM
; 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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; https://bugs.llvm.org/show_bug.cgi?id=6773
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; Pattern:
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; (x | ~m) & (y & m)
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; Should be transformed into:
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; (x & m) | (y & ~m)
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; And then into:
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; ((x ^ y) & m) ^ y
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; ============================================================================ ;
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; Most basic positive tests
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; ============================================================================ ;
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define i32 @p(i32 %x, i32 %y, i32 %m) {
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; CHECK-LABEL: @p(
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%neg = xor i32 %m, -1
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%or = or i32 %neg, %x
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%or1 = or i32 %y, %m
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%ret = and i32 %or, %or1
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ret i32 %ret
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}
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define <2 x i32> @p_splatvec(<2 x i32> %x, <2 x i32> %y, <2 x i32> %m) {
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; CHECK-LABEL: @p_splatvec(
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; CHECK-NEXT: [[NEG:%.*]] = xor <2 x i32> [[M:%.*]], <i32 -1, i32 -1>
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; CHECK-NEXT: [[OR:%.*]] = or <2 x i32> [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or <2 x i32> [[Y:%.*]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and <2 x i32> [[OR]], [[OR1]]
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; CHECK-NEXT: ret <2 x i32> [[RET]]
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;
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%neg = xor <2 x i32> %m, <i32 -1, i32 -1>
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%or = or <2 x i32> %neg, %x
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%or1 = or <2 x i32> %y, %m
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%ret = and <2 x i32> %or, %or1
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ret <2 x i32> %ret
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}
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define <3 x i32> @p_vec_undef(<3 x i32> %x, <3 x i32> %y, <3 x i32> %m) {
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; CHECK-LABEL: @p_vec_undef(
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; CHECK-NEXT: [[NEG:%.*]] = xor <3 x i32> [[M:%.*]], <i32 -1, i32 undef, i32 -1>
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; CHECK-NEXT: [[OR:%.*]] = or <3 x i32> [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or <3 x i32> [[Y:%.*]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and <3 x i32> [[OR]], [[OR1]]
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; CHECK-NEXT: ret <3 x i32> [[RET]]
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;
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%neg = xor <3 x i32> %m, <i32 -1, i32 undef, i32 -1>
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%or = or <3 x i32> %neg, %x
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%or1 = or <3 x i32> %y, %m
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%ret = and <3 x i32> %or, %or1
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ret <3 x i32> %ret
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}
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; ============================================================================ ;
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; Constant mask.
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; ============================================================================ ;
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define i32 @p_constmask(i32 %x, i32 %y) {
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; CHECK-LABEL: @p_constmask(
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -65281
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], 65280
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%or = or i32 %x, -65281
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%or1 = or i32 %y, 65280
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%ret = and i32 %or, %or1
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ret i32 %ret
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}
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define <2 x i32> @p_constmask_splatvec(<2 x i32> %x, <2 x i32> %y) {
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; CHECK-LABEL: @p_constmask_splatvec(
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; CHECK-NEXT: [[OR:%.*]] = or <2 x i32> [[X:%.*]], <i32 -65281, i32 -65281>
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; CHECK-NEXT: [[OR1:%.*]] = or <2 x i32> [[Y:%.*]], <i32 65280, i32 65280>
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; CHECK-NEXT: [[RET:%.*]] = and <2 x i32> [[OR]], [[OR1]]
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; CHECK-NEXT: ret <2 x i32> [[RET]]
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;
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%or = or <2 x i32> %x, <i32 -65281, i32 -65281>
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%or1 = or <2 x i32> %y, <i32 65280, i32 65280>
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%ret = and <2 x i32> %or, %or1
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ret <2 x i32> %ret
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}
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define <2 x i32> @p_constmask_vec(<2 x i32> %x, <2 x i32> %y) {
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; CHECK-LABEL: @p_constmask_vec(
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; CHECK-NEXT: [[OR:%.*]] = or <2 x i32> [[X:%.*]], <i32 -65281, i32 -16776961>
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; CHECK-NEXT: [[OR1:%.*]] = or <2 x i32> [[Y:%.*]], <i32 65280, i32 16776960>
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; CHECK-NEXT: [[RET:%.*]] = and <2 x i32> [[OR]], [[OR1]]
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; CHECK-NEXT: ret <2 x i32> [[RET]]
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;
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%or = or <2 x i32> %x, <i32 -65281, i32 -16776961>
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%or1 = or <2 x i32> %y, <i32 65280, i32 16776960>
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%ret = and <2 x i32> %or, %or1
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ret <2 x i32> %ret
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}
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define <3 x i32> @p_constmask_vec_undef(<3 x i32> %x, <3 x i32> %y) {
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; CHECK-LABEL: @p_constmask_vec_undef(
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; CHECK-NEXT: [[OR:%.*]] = or <3 x i32> [[X:%.*]], <i32 -65281, i32 undef, i32 -65281>
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; CHECK-NEXT: [[OR1:%.*]] = or <3 x i32> [[Y:%.*]], <i32 65280, i32 undef, i32 65280>
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; CHECK-NEXT: [[RET:%.*]] = and <3 x i32> [[OR]], [[OR1]]
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; CHECK-NEXT: ret <3 x i32> [[RET]]
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;
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%or = or <3 x i32> %x, <i32 -65281, i32 undef, i32 -65281>
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%or1 = or <3 x i32> %y, <i32 65280, i32 undef, i32 65280>
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%ret = and <3 x i32> %or, %or1
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ret <3 x i32> %ret
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}
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; ============================================================================ ;
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; Commutativity.
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; ============================================================================ ;
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; Used to make sure that the IR complexity sorting does not interfere.
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declare i32 @gen32()
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define i32 @p_commutative0(i32 %x, i32 %y, i32 %m) {
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; CHECK-LABEL: @p_commutative0(
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%neg = xor i32 %m, -1
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%or = or i32 %x, %neg ; swapped order
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%or1 = or i32 %y, %m
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%ret = and i32 %or, %or1
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ret i32 %ret
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}
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define i32 @p_commutative1(i32 %x, i32 %m) {
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; CHECK-LABEL: @p_commutative1(
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; CHECK-NEXT: [[Y:%.*]] = call i32 @gen32()
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%y = call i32 @gen32()
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%neg = xor i32 %m, -1
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%or = or i32 %neg, %x
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%or1 = or i32 %m, %y; swapped order
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%ret = and i32 %or, %or1
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ret i32 %ret
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}
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define i32 @p_commutative2(i32 %x, i32 %y, i32 %m) {
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; CHECK-LABEL: @p_commutative2(
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR1]], [[OR]]
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%neg = xor i32 %m, -1
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%or = or i32 %neg, %x
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%or1 = or i32 %y, %m
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%ret = and i32 %or1, %or ; swapped order
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ret i32 %ret
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}
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define i32 @p_commutative3(i32 %x, i32 %m) {
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; CHECK-LABEL: @p_commutative3(
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; CHECK-NEXT: [[Y:%.*]] = call i32 @gen32()
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%y = call i32 @gen32()
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%neg = xor i32 %m, -1
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%or = or i32 %x, %neg ; swapped order
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%or1 = or i32 %m, %y; swapped order
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%ret = and i32 %or, %or1
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ret i32 %ret
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}
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define i32 @p_commutative4(i32 %x, i32 %y, i32 %m) {
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; CHECK-LABEL: @p_commutative4(
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR1]], [[OR]]
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%neg = xor i32 %m, -1
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%or = or i32 %x, %neg ; swapped order
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%or1 = or i32 %y, %m
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%ret = and i32 %or1, %or ; swapped order
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ret i32 %ret
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}
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define i32 @p_commutative5(i32 %x, i32 %m) {
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; CHECK-LABEL: @p_commutative5(
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; CHECK-NEXT: [[Y:%.*]] = call i32 @gen32()
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR1]], [[OR]]
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%y = call i32 @gen32()
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%neg = xor i32 %m, -1
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%or = or i32 %neg, %x
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%or1 = or i32 %m, %y; swapped order
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%ret = and i32 %or1, %or ; swapped order
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ret i32 %ret
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}
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define i32 @p_commutative6(i32 %x, i32 %m) {
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; CHECK-LABEL: @p_commutative6(
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; CHECK-NEXT: [[Y:%.*]] = call i32 @gen32()
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR1]], [[OR]]
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%y = call i32 @gen32()
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%neg = xor i32 %m, -1
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%or = or i32 %x, %neg ; swapped order
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%or1 = or i32 %m, %y; swapped order
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%ret = and i32 %or1, %or ; swapped order
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ret i32 %ret
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}
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define i32 @p_constmask_commutative(i32 %x, i32 %y) {
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; CHECK-LABEL: @p_constmask_commutative(
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -65281
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], 65280
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR1]], [[OR]]
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%or = or i32 %x, -65281
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%or1 = or i32 %y, 65280
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%ret = and i32 %or1, %or ; swapped order
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ret i32 %ret
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}
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; ============================================================================ ;
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; Negative tests. Should not be folded.
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; ============================================================================ ;
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; One use only.
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declare void @use32(i32)
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define i32 @n0_oneuse_of_neg_is_ok_0(i32 %x, i32 %y, i32 %m) {
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; CHECK-LABEL: @n0_oneuse_of_neg_is_ok_0(
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
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; CHECK-NEXT: call void @use32(i32 [[NEG]])
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%neg = xor i32 %m, -1
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%or = or i32 %neg, %x
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%or1 = or i32 %y, %m
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%ret = and i32 %or, %or1
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call void @use32(i32 %neg)
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ret i32 %ret
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}
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define i32 @n0_oneuse_1(i32 %x, i32 %y, i32 %m) {
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; CHECK-LABEL: @n0_oneuse_1(
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
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; CHECK-NEXT: call void @use32(i32 [[OR]])
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%neg = xor i32 %m, -1
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%or = or i32 %neg, %x
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%or1 = or i32 %y, %m
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%ret = and i32 %or, %or1
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call void @use32(i32 %or)
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ret i32 %ret
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}
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define i32 @n0_oneuse_2(i32 %x, i32 %y, i32 %m) {
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; CHECK-LABEL: @n0_oneuse_2(
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
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; CHECK-NEXT: call void @use32(i32 [[OR1]])
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%neg = xor i32 %m, -1
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%or = or i32 %neg, %x
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%or1 = or i32 %y, %m
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%ret = and i32 %or, %or1
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call void @use32(i32 %or1)
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ret i32 %ret
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}
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define i32 @n0_oneuse_3(i32 %x, i32 %y, i32 %m) {
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; CHECK-LABEL: @n0_oneuse_3(
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
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; CHECK-NEXT: call void @use32(i32 [[NEG]])
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; CHECK-NEXT: call void @use32(i32 [[OR]])
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%neg = xor i32 %m, -1
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%or = or i32 %neg, %x
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%or1 = or i32 %y, %m
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%ret = and i32 %or, %or1
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call void @use32(i32 %neg)
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call void @use32(i32 %or)
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ret i32 %ret
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}
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define i32 @n0_oneuse_4(i32 %x, i32 %y, i32 %m) {
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; CHECK-LABEL: @n0_oneuse_4(
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
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; CHECK-NEXT: call void @use32(i32 [[NEG]])
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; CHECK-NEXT: call void @use32(i32 [[OR1]])
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%neg = xor i32 %m, -1
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%or = or i32 %neg, %x
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%or1 = or i32 %y, %m
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%ret = and i32 %or, %or1
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call void @use32(i32 %neg)
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call void @use32(i32 %or1)
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ret i32 %ret
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}
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define i32 @n0_oneuse_5(i32 %x, i32 %y, i32 %m) {
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; CHECK-LABEL: @n0_oneuse_5(
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
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; CHECK-NEXT: call void @use32(i32 [[NEG]])
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; CHECK-NEXT: call void @use32(i32 [[OR]])
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; CHECK-NEXT: call void @use32(i32 [[OR1]])
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%neg = xor i32 %m, -1
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%or = or i32 %neg, %x
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%or1 = or i32 %y, %m
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%ret = and i32 %or, %or1
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call void @use32(i32 %neg)
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call void @use32(i32 %or)
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call void @use32(i32 %or1)
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ret i32 %ret
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}
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define i32 @n0_oneuse_6(i32 %x, i32 %y, i32 %m) {
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; CHECK-LABEL: @n0_oneuse_6(
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], -1
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; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
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; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], [[M]]
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; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
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; CHECK-NEXT: call void @use32(i32 [[OR]])
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; CHECK-NEXT: call void @use32(i32 [[OR1]])
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; CHECK-NEXT: ret i32 [[RET]]
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;
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%neg = xor i32 %m, -1
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%or = or i32 %neg, %x
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%or1 = or i32 %y, %m
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%ret = and i32 %or, %or1
|
|
call void @use32(i32 %or)
|
|
call void @use32(i32 %or1)
|
|
ret i32 %ret
|
|
}
|
|
|
|
; One-use with constant mask
|
|
|
|
define i32 @n0_constmask_oneuse_0(i32 %x, i32 %y) {
|
|
; CHECK-LABEL: @n0_constmask_oneuse_0(
|
|
; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -65281
|
|
; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], 65280
|
|
; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
|
|
; CHECK-NEXT: call void @use32(i32 [[OR]])
|
|
; CHECK-NEXT: ret i32 [[RET]]
|
|
;
|
|
%or = or i32 %x, -65281
|
|
%or1 = or i32 %y, 65280
|
|
%ret = and i32 %or, %or1
|
|
call void @use32(i32 %or)
|
|
ret i32 %ret
|
|
}
|
|
|
|
define i32 @n0_constmask_oneuse_1(i32 %x, i32 %y) {
|
|
; CHECK-LABEL: @n0_constmask_oneuse_1(
|
|
; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -65281
|
|
; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], 65280
|
|
; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
|
|
; CHECK-NEXT: call void @use32(i32 [[OR1]])
|
|
; CHECK-NEXT: ret i32 [[RET]]
|
|
;
|
|
%or = or i32 %x, -65281
|
|
%or1 = or i32 %y, 65280
|
|
%ret = and i32 %or, %or1
|
|
call void @use32(i32 %or1)
|
|
ret i32 %ret
|
|
}
|
|
|
|
define i32 @n0_constmask_oneuse_2(i32 %x, i32 %y) {
|
|
; CHECK-LABEL: @n0_constmask_oneuse_2(
|
|
; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -65281
|
|
; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], 65280
|
|
; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
|
|
; CHECK-NEXT: call void @use32(i32 [[OR]])
|
|
; CHECK-NEXT: call void @use32(i32 [[OR1]])
|
|
; CHECK-NEXT: ret i32 [[RET]]
|
|
;
|
|
%or = or i32 %x, -65281
|
|
%or1 = or i32 %y, 65280
|
|
%ret = and i32 %or, %or1
|
|
call void @use32(i32 %or)
|
|
call void @use32(i32 %or1)
|
|
ret i32 %ret
|
|
}
|
|
|
|
; Bad xor constant
|
|
|
|
define i32 @n1_badxor(i32 %x, i32 %y, i32 %m) {
|
|
; CHECK-LABEL: @n1_badxor(
|
|
; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M:%.*]], 1
|
|
; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
|
|
; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], [[M]]
|
|
; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
|
|
; CHECK-NEXT: ret i32 [[RET]]
|
|
;
|
|
%neg = xor i32 %m, 1 ; not -1
|
|
%or = or i32 %neg, %x
|
|
%or1 = or i32 %y, %m
|
|
%ret = and i32 %or, %or1
|
|
ret i32 %ret
|
|
}
|
|
|
|
; Different mask is used
|
|
|
|
define i32 @n2_badmask(i32 %x, i32 %y, i32 %m1, i32 %m2) {
|
|
; CHECK-LABEL: @n2_badmask(
|
|
; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[M2:%.*]], -1
|
|
; CHECK-NEXT: [[OR:%.*]] = or i32 [[NEG]], [[X:%.*]]
|
|
; CHECK-NEXT: [[OR1:%.*]] = or i32 [[M1:%.*]], [[Y:%.*]]
|
|
; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
|
|
; CHECK-NEXT: ret i32 [[RET]]
|
|
;
|
|
%neg = xor i32 %m2, -1 ; different mask, not %m1
|
|
%or = or i32 %neg, %x
|
|
%or1 = or i32 %m1, %y
|
|
%ret = and i32 %or, %or1
|
|
ret i32 %ret
|
|
}
|
|
|
|
; Different const mask is used
|
|
|
|
define i32 @n3_constmask_badmask_set(i32 %x, i32 %y) {
|
|
; CHECK-LABEL: @n3_constmask_badmask_set(
|
|
; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -65281
|
|
; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], 65281
|
|
; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
|
|
; CHECK-NEXT: ret i32 [[RET]]
|
|
;
|
|
%or = or i32 %x, -65281
|
|
%or1 = or i32 %y, 65281 ; not 65280, so they have one common bit
|
|
%ret = and i32 %or, %or1
|
|
ret i32 %ret
|
|
}
|
|
|
|
define i32 @n3_constmask_badmask_unset(i32 %x, i32 %y) {
|
|
; CHECK-LABEL: @n3_constmask_badmask_unset(
|
|
; CHECK-NEXT: [[OR:%.*]] = or i32 [[X:%.*]], -65281
|
|
; CHECK-NEXT: [[OR1:%.*]] = or i32 [[Y:%.*]], 65024
|
|
; CHECK-NEXT: [[RET:%.*]] = and i32 [[OR]], [[OR1]]
|
|
; CHECK-NEXT: ret i32 [[RET]]
|
|
;
|
|
%or = or i32 %x, -65281
|
|
%or1 = or i32 %y, 65024 ; not 65280, so they have one common unset bit
|
|
%ret = and i32 %or, %or1
|
|
ret i32 %ret
|
|
}
|
|
|
|
define i32 @n3_constmask_samemask(i32 %x, i32 %y) {
|
|
; CHECK-LABEL: @n3_constmask_samemask(
|
|
; CHECK-NEXT: [[OR2:%.*]] = and i32 [[X:%.*]], [[Y:%.*]]
|
|
; CHECK-NEXT: [[RET:%.*]] = or i32 [[OR2]], -65281
|
|
; CHECK-NEXT: ret i32 [[RET]]
|
|
;
|
|
%or = or i32 %x, -65281
|
|
%or1 = or i32 %y, -65281 ; both masks are the same
|
|
%ret = and i32 %or, %or1
|
|
ret i32 %ret
|
|
}
|