36 lines
1.2 KiB
LLVM
36 lines
1.2 KiB
LLVM
; RUN: opt < %s -S -inline -inline-threshold=20 | FileCheck %s
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; RUN: opt < %s -S -passes='cgscc(inline)' -inline-threshold=20 | FileCheck %s
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; Check that we don't drop FastMathFlag when estimating inlining profitability.
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;
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; In this test we should inline 'foo' to 'boo', because it'll fold to a
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; constant.
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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define float @foo(float* %a, float %b) {
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entry:
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%a0 = load float, float* %a, align 4
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%mul = fmul fast float %a0, %b
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%tobool = fcmp une float %mul, 0.000000e+00
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br i1 %tobool, label %if.then, label %if.end
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if.then: ; preds = %entry
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%a1 = load float, float* %a, align 8
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%arrayidx1 = getelementptr inbounds float, float* %a, i64 1
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%a2 = load float, float* %arrayidx1, align 4
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%add = fadd fast float %a1, %a2
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br label %if.end
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if.end: ; preds = %if.then, %entry
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%storemerge = phi float [ %add, %if.then ], [ 1.000000e+00, %entry ]
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ret float %storemerge
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}
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; CHECK-LABEL: @boo
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; CHECK-NOT: call float @foo
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define float @boo(float* %a) {
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entry:
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%call = call float @foo(float* %a, float 0.000000e+00)
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ret float %call
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}
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