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llvm-project/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.fdiv.fast.ll

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AMDGPU: Change fdiv lowering based on !fpmath metadata If 2.5 ulp is acceptable, denormals are not required, and isn't a reciprocal which will already be handled, replace with a faster fdiv. Simplify the lowering tests by using per function subtarget features. llvm-svn: 276051
2016-07-20 07:16:53 +08:00
; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck %s
declare float @llvm.amdgcn.fdiv.fast(float, float) #0
; CHECK-LABEL: {{^}}test_fdiv_fast:
; CHECK: v_cndmask_b32_e32 v{{[0-9]+}}, 1.0, v{{[0-9]+}}, vcc
; CHECK: v_mul_f32_e32
; CHECK: v_rcp_f32_e32
; CHECK: v_mul_f32_e32
; CHECK: v_mul_f32_e32
AMDGPU: Mark all unspecified CC functions in tests as amdgpu_kernel Currently the default C calling convention functions are treated the same as compute kernels. Make this explicit so the default calling convention can be changed to a non-kernel. Converted with perl -pi -e 's/define void/define amdgpu_kernel void/' on the relevant test directories (and undoing in one place that actually wanted a non-kernel). llvm-svn: 298444
2017-03-22 05:39:51 +08:00
define amdgpu_kernel void @test_fdiv_fast(float addrspace(1)* %out, float %a, float %b) #1 {
AMDGPU: Change fdiv lowering based on !fpmath metadata If 2.5 ulp is acceptable, denormals are not required, and isn't a reciprocal which will already be handled, replace with a faster fdiv. Simplify the lowering tests by using per function subtarget features. llvm-svn: 276051
2016-07-20 07:16:53 +08:00
%fdiv = call float @llvm.amdgcn.fdiv.fast(float %a, float %b)
store float %fdiv, float addrspace(1)* %out
ret void
}
attributes #0 = { nounwind readnone }
attributes #1 = { nounwind }