52 lines
2.3 KiB
LLVM
52 lines
2.3 KiB
LLVM
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; 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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; A copy of fmul.ll, with undef at insertelement/shufflevector replaced with
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; poison
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; Don't crash when attempting to cast a constant FMul to an instruction.
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define void @test8(i32* %inout) {
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; CHECK-LABEL: @test8(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_COND:%.*]]
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; CHECK: for.cond:
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; CHECK-NEXT: [[LOCAL_VAR_7_0:%.*]] = phi <4 x float> [ <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, [[ENTRY:%.*]] ], [ [[TMP0:%.*]], [[FOR_BODY:%.*]] ]
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; CHECK-NEXT: br i1 undef, label [[FOR_BODY]], label [[FOR_END:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[TMP0]] = insertelement <4 x float> [[LOCAL_VAR_7_0]], float 0.000000e+00, i32 2
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; CHECK-NEXT: br label [[FOR_COND]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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%0 = load i32, i32* %inout, align 4
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%conv = uitofp i32 %0 to float
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%vecinit = insertelement <4 x float> <float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float undef>, float %conv, i32 3
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%sub = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %vecinit
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%1 = shufflevector <4 x float> %sub, <4 x float> poison, <4 x i32> <i32 1, i32 1, i32 1, i32 1>
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%mul = fmul <4 x float> zeroinitializer, %1
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br label %for.cond
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for.cond: ; preds = %for.body, %entry
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%local_var_7.0 = phi <4 x float> [ %mul, %entry ], [ %2, %for.body ]
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br i1 undef, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%2 = insertelement <4 x float> %local_var_7.0, float 0.000000e+00, i32 2
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br label %for.cond
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for.end: ; preds = %for.cond
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ret void
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}
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; fastmath => z * splat(0) = splat(0), even for scalable vectors
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define <vscale x 2 x float> @mul_scalable_splat_zero(<vscale x 2 x float> %z) {
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; CHECK-LABEL: @mul_scalable_splat_zero(
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; CHECK-NEXT: ret <vscale x 2 x float> zeroinitializer
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;
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%shuf = shufflevector <vscale x 2 x float> insertelement (<vscale x 2 x float> undef, float 0.0, i32 0), <vscale x 2 x float> poison, <vscale x 2 x i32> zeroinitializer
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%t3 = fmul fast <vscale x 2 x float> %shuf, %z
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ret <vscale x 2 x float> %t3
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}
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