forked from OSchip/llvm-project
38 lines
1.4 KiB
LLVM
38 lines
1.4 KiB
LLVM
|
; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
|
||
|
|
|
||
|
|
; GCN-LABEL: {{^}}fold_mul_neg:
|
||
|
|
; GCN: load_dword [[V:v[0-9]+]]
|
||
|
|
; GCN: v_or_b32_e32 [[NEG:v[0-9]]], 0x80000000, [[V]]
|
||
|
|
; GCN: store_dword [[NEG]]
|
||
|
|
|
||
|
|
define amdgpu_kernel void @fold_mul_neg(float addrspace(1)* %arg) {
|
||
|
|
%tid = tail call i32 @llvm.amdgcn.workitem.id.x()
|
||
|
|
%gep = getelementptr inbounds float, float addrspace(1)* %arg, i32 %tid
|
||
|
|
%v = load float, float addrspace(1)* %gep, align 4
|
||
|
|
%cmp = fcmp fast ogt float %v, 0.000000e+00
|
||
|
|
%sel = select i1 %cmp, float -1.000000e+00, float 1.000000e+00
|
||
|
|
%mul = fmul fast float %v, %sel
|
||
|
|
store float %mul, float addrspace(1)* %gep, align 4
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; GCN-LABEL: {{^}}fold_mul_abs:
|
||
|
|
; GCN: load_dword [[V:v[0-9]+]]
|
||
|
|
; GCN: v_and_b32_e32 [[ABS:v[0-9]]], 0x7fffffff, [[V]]
|
||
|
|
; GCN: store_dword [[ABS]]
|
||
|
|
|
||
|
|
define amdgpu_kernel void @fold_mul_abs(float addrspace(1)* %arg) {
|
||
|
|
%tid = tail call i32 @llvm.amdgcn.workitem.id.x()
|
||
|
|
%gep = getelementptr inbounds float, float addrspace(1)* %arg, i32 %tid
|
||
|
|
%v = load float, float addrspace(1)* %gep, align 4
|
||
|
|
%cmp = fcmp fast olt float %v, 0.000000e+00
|
||
|
|
%sel = select i1 %cmp, float -1.000000e+00, float 1.000000e+00
|
||
|
|
%mul = fmul fast float %v, %sel
|
||
|
|
store float %mul, float addrspace(1)* %gep, align 4
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
declare i32 @llvm.amdgcn.workitem.id.x() #0
|
||
|
|
|
||
|
|
attributes #0 = { nounwind readnone speculatable }
|