1 ; RUN: llc -mtriple=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
3 ; GCN-LABEL: {{^}}fold_mul_neg:
4 ; GCN: load_dword [[V:v[0-9]+]]
5 ; GCN: v_or_b32_e32 [[NEG:v[0-9]]], 0x80000000, [[V]]
6 ; GCN: store_dword [[NEG]]
8 define amdgpu_kernel void @fold_mul_neg(ptr addrspace(1) %arg) {
9 %tid = tail call i32 @llvm.amdgcn.workitem.id.x()
10 %gep = getelementptr inbounds float, ptr addrspace(1) %arg, i32 %tid
11 %v = load float, ptr addrspace(1) %gep, align 4
12 %cmp = fcmp fast ogt float %v, 0.000000e+00
13 %sel = select i1 %cmp, float -1.000000e+00, float 1.000000e+00
14 %mul = fmul fast float %v, %sel
15 store float %mul, ptr addrspace(1) %gep, align 4
19 ; GCN-LABEL: {{^}}fold_mul_abs:
20 ; GCN: load_dword [[V:v[0-9]+]]
21 ; GCN: v_and_b32_e32 [[ABS:v[0-9]]], 0x7fffffff, [[V]]
22 ; GCN: store_dword [[ABS]]
24 define amdgpu_kernel void @fold_mul_abs(ptr addrspace(1) %arg) {
25 %tid = tail call i32 @llvm.amdgcn.workitem.id.x()
26 %gep = getelementptr inbounds float, ptr addrspace(1) %arg, i32 %tid
27 %v = load float, ptr addrspace(1) %gep, align 4
28 %cmp = fcmp fast olt float %v, 0.000000e+00
29 %sel = select i1 %cmp, float -1.000000e+00, float 1.000000e+00
30 %mul = fmul fast float %v, %sel
31 store float %mul, ptr addrspace(1) %gep, align 4
35 declare i32 @llvm.amdgcn.workitem.id.x() #0
37 attributes #0 = { nounwind readnone speculatable }