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e41bb16926
Previously we'd always lower @llvm.{sin,cos}.f32 to {sin.cos}.approx.f32
instruction even when unsafe FP math was not allowed.
Clang-generated IR is not affected by this as it uses precise sin/cos
from CUDA's libdevice when unsafe math is disabled.
Differential Revision: https://reviews.llvm.org/D28619
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291936 91177308-0d34-0410-b5e6-96231b3b80d8
15 lines
413 B
LLVM
15 lines
413 B
LLVM
; RUN: not llc < %s -march=nvptx -mcpu=sm_20 2>&1 | FileCheck %s
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; Check that we fail to select fcos without fast-math enabled
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declare float @llvm.cos.f32(float)
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; CHECK: LLVM ERROR: Cannot select: {{.*}}: f32 = fcos
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; CHECK: In function: test_fcos_safe
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define float @test_fcos_safe(float %a) #0 {
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%r = tail call float @llvm.cos.f32(float %a)
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ret float %r
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}
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attributes #0 = { "unsafe-fp-math" = "false" }
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