146 lines
3.8 KiB
LLVM
146 lines
3.8 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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declare void @use(i8)
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define i8 @sub_not(i8 %x, i8 %y) {
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; CHECK-LABEL: @sub_not(
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; CHECK-NEXT: [[TMP1:%.*]] = xor i8 [[X:%.*]], -1
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; CHECK-NEXT: [[R:%.*]] = add i8 [[TMP1]], [[Y:%.*]]
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; CHECK-NEXT: ret i8 [[R]]
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;
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%s = sub i8 %x, %y
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%r = xor i8 %s, -1
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ret i8 %r
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}
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define i8 @sub_not_extra_use(i8 %x, i8 %y) {
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; CHECK-LABEL: @sub_not_extra_use(
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; CHECK-NEXT: [[S:%.*]] = sub i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[R:%.*]] = xor i8 [[S]], -1
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; CHECK-NEXT: call void @use(i8 [[S]])
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; CHECK-NEXT: ret i8 [[R]]
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;
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%s = sub i8 %x, %y
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%r = xor i8 %s, -1
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call void @use(i8 %s)
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ret i8 %r
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}
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define <2 x i8> @sub_not_vec(<2 x i8> %x, <2 x i8> %y) {
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; CHECK-LABEL: @sub_not_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i8> [[X:%.*]], <i8 -1, i8 -1>
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; CHECK-NEXT: [[R:%.*]] = add <2 x i8> [[TMP1]], [[Y:%.*]]
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; CHECK-NEXT: ret <2 x i8> [[R]]
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;
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%s = sub <2 x i8> %x, %y
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%r = xor <2 x i8> %s, <i8 -1, i8 undef>
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ret <2 x i8> %r
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}
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define i8 @dec_sub(i8 %x, i8 %y) {
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; CHECK-LABEL: @dec_sub(
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; CHECK-NEXT: [[TMP1:%.*]] = xor i8 [[Y:%.*]], -1
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; CHECK-NEXT: [[R:%.*]] = add i8 [[TMP1]], [[X:%.*]]
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; CHECK-NEXT: ret i8 [[R]]
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;
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%s = sub i8 %x, %y
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%r = add i8 %s, -1
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ret i8 %r
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}
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define i8 @dec_sub_extra_use(i8 %x, i8 %y) {
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; CHECK-LABEL: @dec_sub_extra_use(
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; CHECK-NEXT: [[S:%.*]] = sub i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[R:%.*]] = add i8 [[S]], -1
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; CHECK-NEXT: call void @use(i8 [[S]])
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; CHECK-NEXT: ret i8 [[R]]
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;
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%s = sub i8 %x, %y
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%r = add i8 %s, -1
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call void @use(i8 %s)
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ret i8 %r
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}
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define <2 x i8> @dec_sub_vec(<2 x i8> %x, <2 x i8> %y) {
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; CHECK-LABEL: @dec_sub_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i8> [[Y:%.*]], <i8 -1, i8 -1>
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; CHECK-NEXT: [[R:%.*]] = add <2 x i8> [[TMP1]], [[X:%.*]]
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; CHECK-NEXT: ret <2 x i8> [[R]]
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;
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%s = sub <2 x i8> %x, %y
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%r = add <2 x i8> %s, <i8 -1, i8 undef>
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ret <2 x i8> %r
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}
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define i8 @sub_inc(i8 %x, i8 %y) {
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; CHECK-LABEL: @sub_inc(
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; CHECK-NEXT: [[TMP1:%.*]] = xor i8 [[X:%.*]], -1
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; CHECK-NEXT: [[R:%.*]] = add i8 [[TMP1]], [[Y:%.*]]
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; CHECK-NEXT: ret i8 [[R]]
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;
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%s = add i8 %x, 1
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%r = sub i8 %y, %s
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ret i8 %r
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}
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define i8 @sub_inc_extra_use(i8 %x, i8 %y) {
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; CHECK-LABEL: @sub_inc_extra_use(
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; CHECK-NEXT: [[S:%.*]] = add i8 [[X:%.*]], 1
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; CHECK-NEXT: [[R:%.*]] = sub i8 [[Y:%.*]], [[S]]
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; CHECK-NEXT: call void @use(i8 [[S]])
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; CHECK-NEXT: ret i8 [[R]]
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;
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%s = add i8 %x, 1
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%r = sub i8 %y, %s
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call void @use(i8 %s)
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ret i8 %r
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}
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define <2 x i8> @sub_inc_vec(<2 x i8> %x, <2 x i8> %y) {
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; CHECK-LABEL: @sub_inc_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i8> [[X:%.*]], <i8 -1, i8 -1>
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; CHECK-NEXT: [[R:%.*]] = add <2 x i8> [[TMP1]], [[Y:%.*]]
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; CHECK-NEXT: ret <2 x i8> [[R]]
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;
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%s = add <2 x i8> %x, <i8 undef, i8 1>
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%r = sub <2 x i8> %y, %s
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ret <2 x i8> %r
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}
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define i8 @sub_dec(i8 %x, i8 %y) {
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; CHECK-LABEL: @sub_dec(
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; CHECK-NEXT: [[TMP1:%.*]] = xor i8 [[Y:%.*]], -1
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; CHECK-NEXT: [[R:%.*]] = add i8 [[TMP1]], [[X:%.*]]
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; CHECK-NEXT: ret i8 [[R]]
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;
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%s = add i8 %x, -1
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%r = sub i8 %s, %y
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ret i8 %r
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}
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define i8 @sub_dec_extra_use(i8 %x, i8 %y) {
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; CHECK-LABEL: @sub_dec_extra_use(
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; CHECK-NEXT: [[S:%.*]] = add i8 [[X:%.*]], -1
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; CHECK-NEXT: [[R:%.*]] = sub i8 [[S]], [[Y:%.*]]
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; CHECK-NEXT: call void @use(i8 [[S]])
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; CHECK-NEXT: ret i8 [[R]]
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;
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%s = add i8 %x, -1
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%r = sub i8 %s, %y
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call void @use(i8 %s)
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ret i8 %r
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}
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define <2 x i8> @sub_dec_vec(<2 x i8> %x, <2 x i8> %y) {
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; CHECK-LABEL: @sub_dec_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i8> [[Y:%.*]], <i8 -1, i8 -1>
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; CHECK-NEXT: [[R:%.*]] = add <2 x i8> [[TMP1]], [[X:%.*]]
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; CHECK-NEXT: ret <2 x i8> [[R]]
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;
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%s = add <2 x i8> %x, <i8 undef, i8 -1>
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%r = sub <2 x i8> %s, %y
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ret <2 x i8> %r
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}
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