forked from OSchip/llvm-project
204 lines
9.3 KiB
LLVM
204 lines
9.3 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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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define i32 @test2(float %f) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[TMP5:%.*]] = fmul float %f, %f
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; CHECK-NEXT: [[TMP21:%.*]] = bitcast float [[TMP5]] to i32
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; CHECK-NEXT: ret i32 [[TMP21]]
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;
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%tmp5 = fmul float %f, %f
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%tmp9 = insertelement <4 x float> undef, float %tmp5, i32 0
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%tmp10 = insertelement <4 x float> %tmp9, float 0.000000e+00, i32 1
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%tmp11 = insertelement <4 x float> %tmp10, float 0.000000e+00, i32 2
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%tmp12 = insertelement <4 x float> %tmp11, float 0.000000e+00, i32 3
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%tmp19 = bitcast <4 x float> %tmp12 to <4 x i32>
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%tmp21 = extractelement <4 x i32> %tmp19, i32 0
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ret i32 %tmp21
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}
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define void @get_image() nounwind {
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; CHECK-LABEL: @get_image(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = call i32 @fgetc(i8* null) #0
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; CHECK-NEXT: br i1 false, label %bb2, label %bb3
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; CHECK: bb2:
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; CHECK-NEXT: br label %bb3
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; CHECK: bb3:
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; CHECK-NEXT: unreachable
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;
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entry:
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%0 = call i32 @fgetc(i8* null) nounwind ; <i32> [#uses=1]
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%1 = trunc i32 %0 to i8 ; <i8> [#uses=1]
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%tmp2 = insertelement <100 x i8> zeroinitializer, i8 %1, i32 1 ; <<100 x i8>> [#uses=1]
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%tmp1 = extractelement <100 x i8> %tmp2, i32 0 ; <i8> [#uses=1]
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%2 = icmp eq i8 %tmp1, 80 ; <i1> [#uses=1]
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br i1 %2, label %bb2, label %bb3
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bb2: ; preds = %entry
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br label %bb3
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bb3: ; preds = %bb2, %entry
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unreachable
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}
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; PR4340
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define void @vac(<4 x float>* nocapture %a) nounwind {
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; CHECK-LABEL: @vac(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: store <4 x float> zeroinitializer, <4 x float>* %a, align 16
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; CHECK-NEXT: ret void
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;
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entry:
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%tmp1 = load <4 x float>, <4 x float>* %a ; <<4 x float>> [#uses=1]
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%vecins = insertelement <4 x float> %tmp1, float 0.000000e+00, i32 0 ; <<4 x float>> [#uses=1]
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%vecins4 = insertelement <4 x float> %vecins, float 0.000000e+00, i32 1; <<4 x float>> [#uses=1]
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%vecins6 = insertelement <4 x float> %vecins4, float 0.000000e+00, i32 2; <<4 x float>> [#uses=1]
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%vecins8 = insertelement <4 x float> %vecins6, float 0.000000e+00, i32 3; <<4 x float>> [#uses=1]
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store <4 x float> %vecins8, <4 x float>* %a
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ret void
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}
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declare i32 @fgetc(i8*)
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define <4 x float> @dead_shuffle_elt(<4 x float> %x, <2 x float> %y) nounwind {
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; CHECK-LABEL: @dead_shuffle_elt(
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; CHECK-NEXT: [[SHUFFLE_I:%.*]] = shufflevector <2 x float> %y, <2 x float> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
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; CHECK-NEXT: [[SHUFFLE9_I:%.*]] = shufflevector <4 x float> %x, <4 x float> [[SHUFFLE_I]], <4 x i32> <i32 4, i32 5, i32 2, i32 3>
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; CHECK-NEXT: ret <4 x float> [[SHUFFLE9_I]]
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;
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%shuffle.i = shufflevector <2 x float> %y, <2 x float> %y, <4 x i32> <i32 0, i32 1, i32 0, i32 1>
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%shuffle9.i = shufflevector <4 x float> %x, <4 x float> %shuffle.i, <4 x i32> <i32 4, i32 5, i32 2, i32 3>
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ret <4 x float> %shuffle9.i
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}
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define <2 x float> @test_fptrunc(double %f) {
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; CHECK-LABEL: @test_fptrunc(
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; CHECK-NEXT: [[TMP1:%.*]] = insertelement <2 x double> <double undef, double 0.000000e+00>, double %f, i32 0
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; CHECK-NEXT: [[TMP2:%.*]] = fptrunc <2 x double> [[TMP1]] to <2 x float>
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; CHECK-NEXT: ret <2 x float> [[TMP2]]
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;
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%tmp9 = insertelement <4 x double> undef, double %f, i32 0
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%tmp10 = insertelement <4 x double> %tmp9, double 0.000000e+00, i32 1
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%tmp11 = insertelement <4 x double> %tmp10, double 0.000000e+00, i32 2
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%tmp12 = insertelement <4 x double> %tmp11, double 0.000000e+00, i32 3
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%tmp5 = fptrunc <4 x double> %tmp12 to <4 x float>
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%ret = shufflevector <4 x float> %tmp5, <4 x float> undef, <2 x i32> <i32 0, i32 1>
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ret <2 x float> %ret
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}
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define <2 x double> @test_fpext(float %f) {
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; CHECK-LABEL: @test_fpext(
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; CHECK-NEXT: [[TMP1:%.*]] = insertelement <2 x float> <float undef, float 0.000000e+00>, float %f, i32 0
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; CHECK-NEXT: [[TMP2:%.*]] = fpext <2 x float> [[TMP1]] to <2 x double>
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; CHECK-NEXT: ret <2 x double> [[TMP2]]
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;
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%tmp9 = insertelement <4 x float> undef, float %f, i32 0
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%tmp10 = insertelement <4 x float> %tmp9, float 0.000000e+00, i32 1
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%tmp11 = insertelement <4 x float> %tmp10, float 0.000000e+00, i32 2
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%tmp12 = insertelement <4 x float> %tmp11, float 0.000000e+00, i32 3
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%tmp5 = fpext <4 x float> %tmp12 to <4 x double>
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%ret = shufflevector <4 x double> %tmp5, <4 x double> undef, <2 x i32> <i32 0, i32 1>
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ret <2 x double> %ret
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}
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define <4 x double> @test_shuffle(<4 x double> %f) {
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; CHECK-LABEL: @test_shuffle(
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; CHECK-NEXT: [[RET1:%.*]] = insertelement <4 x double> %f, double 1.000000e+00, i32 3
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; CHECK-NEXT: ret <4 x double> [[RET1]]
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;
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%ret = shufflevector <4 x double> %f, <4 x double> <double undef, double 1.0, double undef, double undef>, <4 x i32> <i32 0, i32 1, i32 2, i32 5>
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ret <4 x double> %ret
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}
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define <4 x float> @test_select(float %f, float %g) {
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; CHECK-LABEL: @test_select(
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; CHECK-NEXT: [[A3:%.*]] = insertelement <4 x float> <float undef, float undef, float undef, float 3.000000e+00>, float %f, i32 0
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; CHECK-NEXT: [[RET:%.*]] = shufflevector <4 x float> [[A3]], <4 x float> <float undef, float 4.000000e+00, float 5.000000e+00, float undef>, <4 x i32> <i32 0, i32 5, i32 6, i32 3>
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; CHECK-NEXT: ret <4 x float> [[RET]]
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;
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%a0 = insertelement <4 x float> undef, float %f, i32 0
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%a1 = insertelement <4 x float> %a0, float 1.000000e+00, i32 1
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%a2 = insertelement <4 x float> %a1, float 2.000000e+00, i32 2
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%a3 = insertelement <4 x float> %a2, float 3.000000e+00, i32 3
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%b0 = insertelement <4 x float> undef, float %g, i32 0
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%b1 = insertelement <4 x float> %b0, float 4.000000e+00, i32 1
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%b2 = insertelement <4 x float> %b1, float 5.000000e+00, i32 2
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%b3 = insertelement <4 x float> %b2, float 6.000000e+00, i32 3
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%ret = select <4 x i1> <i1 true, i1 false, i1 false, i1 true>, <4 x float> %a3, <4 x float> %b3
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ret <4 x float> %ret
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}
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; Check that instcombine doesn't wrongly fold away the select completely.
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; TODO: Should this be an insertelement rather than a shuffle?
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define <2 x i64> @PR24922(<2 x i64> %v) {
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; CHECK-LABEL: @PR24922(
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; CHECK-NEXT: [[RESULT1:%.*]] = insertelement <2 x i64> %v, i64 0, i32 0
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; CHECK-NEXT: ret <2 x i64> [[RESULT1]]
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;
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%result = select <2 x i1> <i1 icmp eq (i64 extractelement (<2 x i64> bitcast (<4 x i32> <i32 15, i32 15, i32 15, i32 15> to <2 x i64>), i64 0), i64 0), i1 true>, <2 x i64> %v, <2 x i64> zeroinitializer
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ret <2 x i64> %result
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}
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; The shuffle only demands the 0th (undef) element of 'out123', so everything should fold away.
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define <4 x float> @inselt_shuf_no_demand(float %a1, float %a2, float %a3) {
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; CHECK-LABEL: @inselt_shuf_no_demand(
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; CHECK-NEXT: ret <4 x float> undef
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;
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%out1 = insertelement <4 x float> undef, float %a1, i32 1
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%out12 = insertelement <4 x float> %out1, float %a2, i32 2
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%out123 = insertelement <4 x float> %out12, float %a3, i32 3
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%shuffle = shufflevector <4 x float> %out123, <4 x float> undef, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef>
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ret <4 x float> %shuffle
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}
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; The shuffle only demands the 0th (undef) element of 'out123', so everything should fold away.
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define <4 x float> @inselt_shuf_no_demand_commute(float %a1, float %a2, float %a3) {
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; CHECK-LABEL: @inselt_shuf_no_demand_commute(
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; CHECK-NEXT: ret <4 x float> undef
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;
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%out1 = insertelement <4 x float> undef, float %a1, i32 1
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%out12 = insertelement <4 x float> %out1, float %a2, i32 2
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%out123 = insertelement <4 x float> %out12, float %a3, i32 3
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%shuffle = shufflevector <4 x float> undef, <4 x float> %out123, <4 x i32> <i32 4, i32 undef, i32 undef, i32 undef>
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ret <4 x float> %shuffle
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}
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; The add uses 'out012' giving it multiple uses after the shuffle is transformed to also
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; use 'out012'. The analysis should be able to see past that.
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define <4 x i32> @inselt_shuf_no_demand_multiuse(i32 %a0, i32 %a1, <4 x i32> %b) {
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; CHECK-LABEL: @inselt_shuf_no_demand_multiuse(
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; CHECK-NEXT: [[OUT0:%.*]] = insertelement <4 x i32> undef, i32 %a0, i32 0
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; CHECK-NEXT: [[OUT01:%.*]] = insertelement <4 x i32> [[OUT0]], i32 %a1, i32 1
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; CHECK-NEXT: [[FOO:%.*]] = add <4 x i32> [[OUT01]], %b
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; CHECK-NEXT: ret <4 x i32> [[FOO]]
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;
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%out0 = insertelement <4 x i32> undef, i32 %a0, i32 0
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%out01 = insertelement <4 x i32> %out0, i32 %a1, i32 1
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%out012 = insertelement <4 x i32> %out01, i32 %a0, i32 2
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%foo = add <4 x i32> %out012, %b
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%out0123 = insertelement <4 x i32> %foo, i32 %a1, i32 3
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%shuffle = shufflevector <4 x i32> %out0123, <4 x i32> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
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ret <4 x i32> %shuffle
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}
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; FIXME: We should be able to look past the bogus use of 'out12' and kill 'out1'.
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define <4 x float> @inselt_shuf_no_demand_bogus_insert_index_in_chain(float %a1, float %a2, float %a3, i32 %variable_index) {
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; CHECK-LABEL: @inselt_shuf_no_demand_bogus_insert_index_in_chain(
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; CHECK-NEXT: [[OUT12:%.*]] = insertelement <4 x float> undef, float [[A2:%.*]], i32 [[VARIABLE_INDEX:%.*]]
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; CHECK-NEXT: ret <4 x float> [[OUT12]]
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;
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%out1 = insertelement <4 x float> undef, float %a1, i32 1
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%out12 = insertelement <4 x float> %out1, float %a2, i32 %variable_index ; something unexpected
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%out123 = insertelement <4 x float> %out12, float %a3, i32 3
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%shuffle = shufflevector <4 x float> %out123, <4 x float> undef, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef>
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ret <4 x float> %shuffle
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}
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