1 ; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s 2 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]] 7 8 define amdgpu_kernel void @fold_mul_neg(float addrspace(1)* %arg) { 9 %tid = tail call i32 @llvm.amdgcn.workitem.id.x() 10 %gep = getelementptr inbounds float, float addrspace(1)* %arg, i32 %tid 11 %v = load float, float 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, float addrspace(1)* %gep, align 4 16 ret void 17 } 18 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]] 23 24 define amdgpu_kernel void @fold_mul_abs(float addrspace(1)* %arg) { 25 %tid = tail call i32 @llvm.amdgcn.workitem.id.x() 26 %gep = getelementptr inbounds float, float addrspace(1)* %arg, i32 %tid 27 %v = load float, float 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, float addrspace(1)* %gep, align 4 32 ret void 33 } 34 35 declare i32 @llvm.amdgcn.workitem.id.x() #0 36 37 attributes #0 = { nounwind readnone speculatable } 38
