diff options
| -rw-r--r-- | llvm/test/Transforms/InstCombine/select.ll | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/select.ll b/llvm/test/Transforms/InstCombine/select.ll index 332b29d103c..cfcae9f4c85 100644 --- a/llvm/test/Transforms/InstCombine/select.ll +++ b/llvm/test/Transforms/InstCombine/select.ll @@ -1532,3 +1532,111 @@ define <2 x i32> @test_shl_zext_bool_vec(<2 x i1> %t) { %r = select <2 x i1> %t, <2 x i32> <i32 4, i32 8>, <2 x i32> zeroinitializer ret <2 x i32> %r } + +define float @copysign1(float %x) { +; CHECK-LABEL: @copysign1( +; CHECK-NEXT: [[I:%.*]] = bitcast float [[X:%.*]] to i32 +; CHECK-NEXT: [[ISPOS:%.*]] = icmp sgt i32 [[I]], -1 +; CHECK-NEXT: [[R:%.*]] = select i1 [[ISPOS]], float 1.000000e+00, float -1.000000e+00 +; CHECK-NEXT: ret float [[R]] +; + %i = bitcast float %x to i32 + %ispos = icmp sgt i32 %i, -1 + %r = select i1 %ispos, float 1.0, float -1.0 + ret float %r +} + +define <2 x float> @copysign2(<2 x float> %x) { +; CHECK-LABEL: @copysign2( +; CHECK-NEXT: [[I:%.*]] = bitcast <2 x float> [[X:%.*]] to <2 x i32> +; CHECK-NEXT: [[ISNEG:%.*]] = icmp slt <2 x i32> [[I]], zeroinitializer +; CHECK-NEXT: [[R:%.*]] = select <2 x i1> [[ISNEG]], <2 x float> <float 4.200000e+01, float 4.200000e+01>, <2 x float> <float -4.200000e+01, float -4.200000e+01> +; CHECK-NEXT: ret <2 x float> [[R]] +; + %i = bitcast <2 x float> %x to <2 x i32> + %isneg = icmp slt <2 x i32> %i, zeroinitializer + %r = select <2 x i1> %isneg, <2 x float> <float 42.0, float 42.0>, <2 x float> <float -42.0, float -42.0> + ret <2 x float> %r +} + +define float @copysign3(float %x) { +; CHECK-LABEL: @copysign3( +; CHECK-NEXT: [[I:%.*]] = bitcast float [[X:%.*]] to i32 +; CHECK-NEXT: [[ISPOS:%.*]] = icmp sgt i32 [[I]], -1 +; CHECK-NEXT: [[R:%.*]] = select i1 [[ISPOS]], float -4.300000e+01, float 4.300000e+01 +; CHECK-NEXT: ret float [[R]] +; + %i = bitcast float %x to i32 + %ispos = icmp ult i32 %i, 2147483648 + %r = select i1 %ispos, float -43.0, float 43.0 + ret float %r +} + +define float @copysign4(float %x) { +; CHECK-LABEL: @copysign4( +; CHECK-NEXT: [[I:%.*]] = bitcast float [[X:%.*]] to i32 +; CHECK-NEXT: [[ISNEG:%.*]] = icmp slt i32 [[I]], 0 +; CHECK-NEXT: [[R:%.*]] = select i1 [[ISNEG]], float -4.400000e+01, float 4.400000e+01 +; CHECK-NEXT: ret float [[R]] +; + %i = bitcast float %x to i32 + %isneg = icmp ugt i32 %i, 2147483647 + %r = select i1 %isneg, float -44.0, float 44.0 + ret float %r +} + +declare void @use1(i1) + +define float @copysign_extra_use(float %x) { +; CHECK-LABEL: @copysign_extra_use( +; CHECK-NEXT: [[I:%.*]] = bitcast float [[X:%.*]] to i32 +; CHECK-NEXT: [[ISNEG:%.*]] = icmp slt i32 [[I]], 0 +; CHECK-NEXT: call void @use1(i1 [[ISNEG]]) +; CHECK-NEXT: [[R:%.*]] = select i1 [[ISNEG]], float -4.400000e+01, float 4.400000e+01 +; CHECK-NEXT: ret float [[R]] +; + %i = bitcast float %x to i32 + %isneg = icmp ugt i32 %i, 2147483647 + call void @use1(i1 %isneg) + %r = select i1 %isneg, float -44.0, float 44.0 + ret float %r +} + +define float @copysign_type_mismatch(double %x) { +; CHECK-LABEL: @copysign_type_mismatch( +; CHECK-NEXT: [[I:%.*]] = bitcast double [[X:%.*]] to i64 +; CHECK-NEXT: [[ISPOS:%.*]] = icmp sgt i64 [[I]], -1 +; CHECK-NEXT: [[R:%.*]] = select i1 [[ISPOS]], float 1.000000e+00, float -1.000000e+00 +; CHECK-NEXT: ret float [[R]] +; + %i = bitcast double %x to i64 + %ispos = icmp sgt i64 %i, -1 + %r = select i1 %ispos, float 1.0, float -1.0 + ret float %r +} + +define float @copysign_wrong_cmp(float %x) { +; CHECK-LABEL: @copysign_wrong_cmp( +; CHECK-NEXT: [[I:%.*]] = bitcast float [[X:%.*]] to i32 +; CHECK-NEXT: [[ISPOS:%.*]] = icmp sgt i32 [[I]], 0 +; CHECK-NEXT: [[R:%.*]] = select i1 [[ISPOS]], float 1.000000e+00, float -1.000000e+00 +; CHECK-NEXT: ret float [[R]] +; + %i = bitcast float %x to i32 + %ispos = icmp sgt i32 %i, 0 + %r = select i1 %ispos, float 1.0, float -1.0 + ret float %r +} + +define float @copysign_wrong_const(float %x) { +; CHECK-LABEL: @copysign_wrong_const( +; CHECK-NEXT: [[I:%.*]] = bitcast float [[X:%.*]] to i32 +; CHECK-NEXT: [[ISPOS:%.*]] = icmp sgt i32 [[I]], -1 +; CHECK-NEXT: [[R:%.*]] = select i1 [[ISPOS]], float 2.000000e+00, float -1.000000e+00 +; CHECK-NEXT: ret float [[R]] +; + %i = bitcast float %x to i32 + %ispos = icmp sgt i32 %i, -1 + %r = select i1 %ispos, float 2.0, float -1.0 + ret float %r +} |
