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| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2016-03-11 07:42:49 +0000 |
|---|---|---|
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2016-03-11 07:42:49 +0000 |
| commit | 9a19c240c0011836675d4563b1414ab739e7b744 (patch) | |
| tree | 627c33188997bcdf65fe058e89e2b7fe7671092f /llvm/test/CodeGen/AMDGPU/fneg-fabs.f64.ll | |
| parent | 6098cbbd2c6de04bba89ab4292349f63fc3c3384 (diff) | |
| download | bcm5719-llvm-9a19c240c0011836675d4563b1414ab739e7b744.tar.gz bcm5719-llvm-9a19c240c0011836675d4563b1414ab739e7b744.zip | |
AMDGPU: Materialize sign bits with bfrev
If a constant is the same as the reverse of an inline immediate,
this is 4 bytes smaller than having to embed a 32-bit literal.
llvm-svn: 263201
Diffstat (limited to 'llvm/test/CodeGen/AMDGPU/fneg-fabs.f64.ll')
| -rw-r--r-- | llvm/test/CodeGen/AMDGPU/fneg-fabs.f64.ll | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/fneg-fabs.f64.ll b/llvm/test/CodeGen/AMDGPU/fneg-fabs.f64.ll index 8830e827366..78739f28e75 100644 --- a/llvm/test/CodeGen/AMDGPU/fneg-fabs.f64.ll +++ b/llvm/test/CodeGen/AMDGPU/fneg-fabs.f64.ll @@ -44,7 +44,7 @@ define void @fneg_fabs_free_f64(double addrspace(1)* %out, i64 %in) { } ; FUNC-LABEL: {{^}}fneg_fabs_fn_free_f64: -; SI: v_mov_b32_e32 [[IMMREG:v[0-9]+]], 0x80000000 +; SI: v_bfrev_b32_e32 [[IMMREG:v[0-9]+]], 1{{$}} ; SI: v_or_b32_e32 v{{[0-9]+}}, s{{[0-9]+}}, [[IMMREG]] define void @fneg_fabs_fn_free_f64(double addrspace(1)* %out, i64 %in) { %bc = bitcast i64 %in to double @@ -57,7 +57,7 @@ define void @fneg_fabs_fn_free_f64(double addrspace(1)* %out, i64 %in) { ; FUNC-LABEL: {{^}}fneg_fabs_f64: ; SI: s_load_dwordx2 s{{\[}}[[LO_X:[0-9]+]]:[[HI_X:[0-9]+]]{{\]}} ; SI: s_load_dwordx2 -; SI: v_mov_b32_e32 [[IMMREG:v[0-9]+]], 0x80000000 +; SI: v_bfrev_b32_e32 [[IMMREG:v[0-9]+]], 1{{$}} ; SI-DAG: v_or_b32_e32 v[[HI_V:[0-9]+]], s[[HI_X]], [[IMMREG]] ; SI-DAG: v_mov_b32_e32 v[[LO_V:[0-9]+]], s[[LO_X]] ; SI: buffer_store_dwordx2 v{{\[}}[[LO_V]]:[[HI_V]]{{\]}} @@ -69,7 +69,7 @@ define void @fneg_fabs_f64(double addrspace(1)* %out, double %in) { } ; FUNC-LABEL: {{^}}fneg_fabs_v2f64: -; SI: v_mov_b32_e32 [[IMMREG:v[0-9]+]], 0x80000000 +; SI: v_bfrev_b32_e32 [[IMMREG:v[0-9]+]], 1{{$}} ; SI-NOT: 0x80000000 ; SI: v_or_b32_e32 v{{[0-9]+}}, s{{[0-9]+}}, [[IMMREG]] ; SI: v_or_b32_e32 v{{[0-9]+}}, s{{[0-9]+}}, [[IMMREG]] @@ -81,7 +81,7 @@ define void @fneg_fabs_v2f64(<2 x double> addrspace(1)* %out, <2 x double> %in) } ; FUNC-LABEL: {{^}}fneg_fabs_v4f64: -; SI: v_mov_b32_e32 [[IMMREG:v[0-9]+]], 0x80000000 +; SI: v_bfrev_b32_e32 [[IMMREG:v[0-9]+]], 1{{$}} ; SI-NOT: 0x80000000 ; SI: v_or_b32_e32 v{{[0-9]+}}, s{{[0-9]+}}, [[IMMREG]] ; SI: v_or_b32_e32 v{{[0-9]+}}, s{{[0-9]+}}, [[IMMREG]] |
