forked from OSchip/llvm-project
174 lines
4.6 KiB
LLVM
174 lines
4.6 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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define i1 @eq_zero(i4 %x, i4 %y) {
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; CHECK-LABEL: @eq_zero(
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; CHECK-NEXT: [[I0:%.*]] = icmp eq i4 [[X:%.*]], 0
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; CHECK-NEXT: [[I1:%.*]] = icmp eq i4 [[Y:%.*]], 0
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; CHECK-NEXT: [[R:%.*]] = xor i1 [[I0]], [[I1]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%i0 = icmp eq i4 %x, 0
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%i1 = icmp eq i4 %y, 0
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%r = xor i1 %i0, %i1
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ret i1 %r
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}
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define i1 @ne_zero(i4 %x, i4 %y) {
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; CHECK-LABEL: @ne_zero(
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; CHECK-NEXT: [[I0:%.*]] = icmp ne i4 [[X:%.*]], 0
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; CHECK-NEXT: [[I1:%.*]] = icmp ne i4 [[Y:%.*]], 0
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; CHECK-NEXT: [[R:%.*]] = xor i1 [[I0]], [[I1]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%i0 = icmp ne i4 %x, 0
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%i1 = icmp ne i4 %y, 0
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%r = xor i1 %i0, %i1
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ret i1 %r
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}
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define i1 @eq_ne_zero(i4 %x, i4 %y) {
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; CHECK-LABEL: @eq_ne_zero(
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; CHECK-NEXT: [[I0:%.*]] = icmp eq i4 [[X:%.*]], 0
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; CHECK-NEXT: [[I1:%.*]] = icmp ne i4 [[Y:%.*]], 0
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; CHECK-NEXT: [[R:%.*]] = xor i1 [[I0]], [[I1]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%i0 = icmp eq i4 %x, 0
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%i1 = icmp ne i4 %y, 0
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%r = xor i1 %i0, %i1
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ret i1 %r
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}
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define i1 @slt_zero(i4 %x, i4 %y) {
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; CHECK-LABEL: @slt_zero(
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; CHECK-NEXT: [[TMP1:%.*]] = xor i4 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[TMP2:%.*]] = icmp slt i4 [[TMP1]], 0
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; CHECK-NEXT: ret i1 [[TMP2]]
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;
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%i0 = icmp slt i4 %x, 0
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%i1 = icmp slt i4 %y, 0
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%r = xor i1 %i0, %i1
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ret i1 %r
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}
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; Don't increase the instruction count.
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declare void @use(i1)
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define i1 @slt_zero_extra_uses(i4 %x, i4 %y) {
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; CHECK-LABEL: @slt_zero_extra_uses(
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; CHECK-NEXT: [[I0:%.*]] = icmp slt i4 [[X:%.*]], 0
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; CHECK-NEXT: [[I1:%.*]] = icmp slt i4 [[Y:%.*]], 0
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; CHECK-NEXT: [[R:%.*]] = xor i1 [[I0]], [[I1]]
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; CHECK-NEXT: call void @use(i1 [[I0]])
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; CHECK-NEXT: call void @use(i1 [[I1]])
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; CHECK-NEXT: ret i1 [[R]]
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;
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%i0 = icmp slt i4 %x, 0
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%i1 = icmp slt i4 %y, 0
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%r = xor i1 %i0, %i1
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call void @use(i1 %i0)
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call void @use(i1 %i1)
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ret i1 %r
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}
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define i1 @sgt_zero(i4 %x, i4 %y) {
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; CHECK-LABEL: @sgt_zero(
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; CHECK-NEXT: [[I0:%.*]] = icmp sgt i4 [[X:%.*]], 0
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; CHECK-NEXT: [[I1:%.*]] = icmp sgt i4 [[Y:%.*]], 0
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; CHECK-NEXT: [[R:%.*]] = xor i1 [[I0]], [[I1]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%i0 = icmp sgt i4 %x, 0
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%i1 = icmp sgt i4 %y, 0
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%r = xor i1 %i0, %i1
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ret i1 %r
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}
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define i1 @sgt_minus1(i4 %x, i4 %y) {
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; CHECK-LABEL: @sgt_minus1(
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; CHECK-NEXT: [[TMP1:%.*]] = xor i4 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[TMP2:%.*]] = icmp slt i4 [[TMP1]], 0
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; CHECK-NEXT: ret i1 [[TMP2]]
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;
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%i0 = icmp sgt i4 %x, -1
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%i1 = icmp sgt i4 %y, -1
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%r = xor i1 %i0, %i1
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ret i1 %r
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}
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define i1 @slt_zero_sgt_minus1(i4 %x, i4 %y) {
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; CHECK-LABEL: @slt_zero_sgt_minus1(
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; CHECK-NEXT: [[TMP1:%.*]] = xor i4 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[TMP2:%.*]] = icmp sgt i4 [[TMP1]], -1
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; CHECK-NEXT: ret i1 [[TMP2]]
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;
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%i0 = icmp slt i4 %x, 0
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%i1 = icmp sgt i4 %y, -1
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%r = xor i1 %i0, %i1
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ret i1 %r
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}
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define <2 x i1> @sgt_minus1_slt_zero_sgt(<2 x i4> %x, <2 x i4> %y) {
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; CHECK-LABEL: @sgt_minus1_slt_zero_sgt(
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; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i4> [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[TMP2:%.*]] = icmp sgt <2 x i4> [[TMP1]], <i4 -1, i4 -1>
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; CHECK-NEXT: ret <2 x i1> [[TMP2]]
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;
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%i1 = icmp sgt <2 x i4> %x, <i4 -1, i4 -1>
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%i0 = icmp slt <2 x i4> %y, zeroinitializer
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%r = xor <2 x i1> %i0, %i1
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ret <2 x i1> %r
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}
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; Don't try (crash) if the operand types don't match.
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define i1 @different_type_cmp_ops(i32 %x, i64 %y) {
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; CHECK-LABEL: @different_type_cmp_ops(
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; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 [[X:%.*]], 0
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; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i64 [[Y:%.*]], 0
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; CHECK-NEXT: [[R:%.*]] = xor i1 [[CMP1]], [[CMP2]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%cmp1 = icmp slt i32 %x, 0
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%cmp2 = icmp slt i64 %y, 0
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%r = xor i1 %cmp1, %cmp2
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ret i1 %r
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}
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define i1 @test13(i8 %A, i8 %B) {
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; CHECK-LABEL: @test13(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: ret i1 [[TMP1]]
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;
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%C = icmp ult i8 %A, %B
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%D = icmp ugt i8 %A, %B
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%E = xor i1 %C, %D
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ret i1 %E
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}
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define i1 @test14(i8 %A, i8 %B) {
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; CHECK-LABEL: @test14(
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; CHECK-NEXT: ret i1 true
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;
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%C = icmp eq i8 %A, %B
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%D = icmp ne i8 %B, %A
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%E = xor i1 %C, %D
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ret i1 %E
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}
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define i1 @xor_icmp_ptr(i8* %c, i8* %d) {
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; CHECK-LABEL: @xor_icmp_ptr(
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8* [[C:%.*]], null
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; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i8* [[D:%.*]], null
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; CHECK-NEXT: [[XOR:%.*]] = xor i1 [[CMP]], [[CMP1]]
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; CHECK-NEXT: ret i1 [[XOR]]
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;
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%cmp = icmp slt i8* %c, null
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%cmp1 = icmp slt i8* %d, null
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%xor = xor i1 %cmp, %cmp1
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ret i1 %xor
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}
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