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a27bf373d9
These are precise enough to use for OpenCL unless denormals are handled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213107 91177308-0d34-0410-b5e6-96231b3b80d8
29 lines
1.2 KiB
LLVM
29 lines
1.2 KiB
LLVM
; RUN: llc -march=r600 -mcpu=SI -mattr=-fp32-denormals -verify-machineinstrs -enable-unsafe-fp-math < %s | FileCheck -check-prefix=SI-UNSAFE -check-prefix=SI %s
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; RUN: llc -march=r600 -mcpu=SI -mattr=-fp32-denormals -verify-machineinstrs < %s | FileCheck -check-prefix=SI-SAFE -check-prefix=SI %s
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declare float @llvm.sqrt.f32(float) nounwind readnone
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declare double @llvm.sqrt.f64(double) nounwind readnone
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; SI-LABEL: @rsq_f32
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; SI: V_RSQ_F32_e32
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; SI: S_ENDPGM
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define void @rsq_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) nounwind {
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%val = load float addrspace(1)* %in, align 4
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%sqrt = call float @llvm.sqrt.f32(float %val) nounwind readnone
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%div = fdiv float 1.0, %sqrt
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store float %div, float addrspace(1)* %out, align 4
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ret void
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}
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; SI-LABEL: @rsq_f64
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; SI-UNSAFE: V_RSQ_F64_e32
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; SI-SAFE: V_SQRT_F64_e32
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; SI: S_ENDPGM
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define void @rsq_f64(double addrspace(1)* noalias %out, double addrspace(1)* noalias %in) nounwind {
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%val = load double addrspace(1)* %in, align 4
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%sqrt = call double @llvm.sqrt.f64(double %val) nounwind readnone
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%div = fdiv double 1.0, %sqrt
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store double %div, double addrspace(1)* %out, align 4
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ret void
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}
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