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https://github.com/c64scene-ar/llvm-6502.git
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8603a3d1c5
Only do for f32 since I'm unclear on both what this is expecting for the refinement steps in terms of accuracy, and what f64 instruction actually provides. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225827 91177308-0d34-0410-b5e6-96231b3b80d8
28 lines
964 B
LLVM
28 lines
964 B
LLVM
; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck %s
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; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs -enable-unsafe-fp-math < %s | FileCheck %s
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; Run with unsafe-fp-math to make sure nothing tries to turn this into 1 / rsqrt(x)
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; CHECK: {{^}}fsqrt_f32:
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; CHECK: v_sqrt_f32_e32 {{v[0-9]+, v[0-9]+}}
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define void @fsqrt_f32(float addrspace(1)* %out, float addrspace(1)* %in) {
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%r0 = load float addrspace(1)* %in
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%r1 = call float @llvm.sqrt.f32(float %r0)
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store float %r1, float addrspace(1)* %out
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ret void
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}
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; CHECK: {{^}}fsqrt_f64:
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; CHECK: v_sqrt_f64_e32 {{v\[[0-9]+:[0-9]+\], v\[[0-9]+:[0-9]+\]}}
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define void @fsqrt_f64(double addrspace(1)* %out, double addrspace(1)* %in) {
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%r0 = load double addrspace(1)* %in
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%r1 = call double @llvm.sqrt.f64(double %r0)
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store double %r1, double addrspace(1)* %out
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ret void
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}
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declare float @llvm.sqrt.f32(float %Val)
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declare double @llvm.sqrt.f64(double %Val)
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