140 lines
3.9 KiB
LLVM
140 lines
3.9 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -instcombine -S < %s | FileCheck %s
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declare void @use(i8)
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define i8 @basic(i8 %x, i8 %y) {
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; CHECK-LABEL: @basic(
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; CHECK-NEXT: [[NOTA:%.*]] = sub i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: ret i8 [[NOTA]]
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;
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%notx = xor i8 %x, -1
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%a = add i8 %notx, %y
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%nota = xor i8 %a, -1
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ret i8 %nota
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}
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define i8 @basic_com_add(i8 %x, i8 %y) {
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; CHECK-LABEL: @basic_com_add(
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; CHECK-NEXT: [[NOTA:%.*]] = sub i8 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: ret i8 [[NOTA]]
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;
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%noty = xor i8 %y, -1
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%a = add i8 %x, %noty
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%nota = xor i8 %a, -1
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ret i8 %nota
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}
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define i8 @basic_use_xor(i8 %x, i8 %y) {
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; CHECK-LABEL: @basic_use_xor(
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; CHECK-NEXT: [[NOTX:%.*]] = xor i8 [[X:%.*]], -1
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; CHECK-NEXT: call void @use(i8 [[NOTX]])
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; CHECK-NEXT: [[NOTA:%.*]] = sub i8 [[X]], [[Y:%.*]]
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; CHECK-NEXT: ret i8 [[NOTA]]
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;
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%notx = xor i8 %x, -1
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call void @use(i8 %notx)
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%a = add i8 %notx, %y
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%nota = xor i8 %a, -1
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ret i8 %nota
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}
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define i8 @basic_use_add(i8 %x, i8 %y) {
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; CHECK-LABEL: @basic_use_add(
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; CHECK-NEXT: [[NOTX:%.*]] = xor i8 [[X:%.*]], -1
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; CHECK-NEXT: [[A:%.*]] = add i8 [[NOTX]], [[Y:%.*]]
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; CHECK-NEXT: call void @use(i8 [[A]])
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; CHECK-NEXT: [[NOTA:%.*]] = sub i8 [[X]], [[Y]]
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; CHECK-NEXT: ret i8 [[NOTA]]
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;
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%notx = xor i8 %x, -1
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%a = add i8 %notx, %y
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call void @use(i8 %a)
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%nota = xor i8 %a, -1
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ret i8 %nota
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}
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define i8 @basic_use_both(i8 %x, i8 %y) {
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; CHECK-LABEL: @basic_use_both(
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; CHECK-NEXT: [[NOTX:%.*]] = xor i8 [[X:%.*]], -1
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; CHECK-NEXT: call void @use(i8 [[NOTX]])
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; CHECK-NEXT: [[A:%.*]] = add i8 [[NOTX]], [[Y:%.*]]
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; CHECK-NEXT: call void @use(i8 [[A]])
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; CHECK-NEXT: [[NOTA:%.*]] = sub i8 [[X]], [[Y]]
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; CHECK-NEXT: ret i8 [[NOTA]]
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;
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%notx = xor i8 %x, -1
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call void @use(i8 %notx)
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%a = add i8 %notx, %y
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call void @use(i8 %a)
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%nota = xor i8 %a, -1
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ret i8 %nota
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}
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define i8 @basic_preserve_nsw(i8 %x, i8 %y) {
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; CHECK-LABEL: @basic_preserve_nsw(
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; CHECK-NEXT: [[NOTA:%.*]] = sub nsw i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: ret i8 [[NOTA]]
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;
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%notx = xor i8 %x, -1
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%a = add nsw i8 %notx, %y
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%nota = xor i8 %a, -1
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ret i8 %nota
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}
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define i8 @basic_preserve_nuw(i8 %x, i8 %y) {
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; CHECK-LABEL: @basic_preserve_nuw(
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; CHECK-NEXT: [[NOTA:%.*]] = sub nuw i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: ret i8 [[NOTA]]
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;
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%notx = xor i8 %x, -1
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%a = add nuw i8 %notx, %y
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%nota = xor i8 %a, -1
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ret i8 %nota
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}
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define i8 @basic_preserve_nuw_nsw(i8 %x, i8 %y) {
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; CHECK-LABEL: @basic_preserve_nuw_nsw(
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; CHECK-NEXT: [[NOTA:%.*]] = sub nuw nsw i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: ret i8 [[NOTA]]
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;
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%notx = xor i8 %x, -1
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%a = add nuw nsw i8 %notx, %y
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%nota = xor i8 %a, -1
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ret i8 %nota
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}
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define <4 x i32> @vector_test(<4 x i32> %x, <4 x i32> %y) {
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; CHECK-LABEL: @vector_test(
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; CHECK-NEXT: [[NOTA:%.*]] = sub <4 x i32> [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: ret <4 x i32> [[NOTA]]
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;
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%notx = xor <4 x i32> %x, <i32 -1, i32 -1, i32 -1, i32 -1>
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%a = add <4 x i32> %notx, %y
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%nota = xor <4 x i32> %a, <i32 -1, i32 -1, i32 -1, i32 -1>
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ret <4 x i32> %nota
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}
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define <4 x i32> @vector_test_undef(<4 x i32> %x, <4 x i32> %y) {
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; CHECK-LABEL: @vector_test_undef(
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; CHECK-NEXT: [[NOTA:%.*]] = sub <4 x i32> [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: ret <4 x i32> [[NOTA]]
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;
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%notx = xor <4 x i32> %x, <i32 -1, i32 undef, i32 undef, i32 -1>
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%a = add <4 x i32> %notx, %y
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%nota = xor <4 x i32> %a, <i32 -1, i32 -1, i32 undef, i32 undef>
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ret <4 x i32> %nota
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}
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define <4 x i32> @vector_test_undef_nsw_nuw(<4 x i32> %x, <4 x i32> %y) {
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; CHECK-LABEL: @vector_test_undef_nsw_nuw(
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; CHECK-NEXT: [[NOTA:%.*]] = sub nuw nsw <4 x i32> [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: ret <4 x i32> [[NOTA]]
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;
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%notx = xor <4 x i32> %x, <i32 -1, i32 undef, i32 undef, i32 -1>
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%a = add nsw nuw <4 x i32> %notx, %y
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%nota = xor <4 x i32> %a, <i32 -1, i32 -1, i32 undef, i32 undef>
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ret <4 x i32> %nota
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}
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