RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2025-01-17 07:22:54 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

R600/SI: Default to no single precision denormals.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213017 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matt Arsenault 2014-07-14 23:40:43 +00:00
parent afa0ba139f
commit 5b70c8ac7e
2 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
lib/Target/R600/AMDGPUAsmPrinter.cpp
View File

@ -47,10 +47,18 @@ using namespace llvm;
// precision, and leaves single precision to flush all and does not report // precision, and leaves single precision to flush all and does not report
// CL_FP_DENORM for CL_DEVICE_SINGLE_FP_CONFIG. Mesa's OpenCL currently reports // CL_FP_DENORM for CL_DEVICE_SINGLE_FP_CONFIG. Mesa's OpenCL currently reports
// CL_FP_DENORM for both. // CL_FP_DENORM for both.
//
// FIXME: It seems some instructions do not support single precision denormals
// regardless of the mode (exp_*_f32, rcp_*_f32, rsq_*_f32, rsq_*f32, sqrt_f32,
// and sin_f32, cos_f32 on most parts).
// We want to use these instructions, and using fp32 denormals also causes
// instructions to run at the double precision rate for the device so it's
// probably best to just report no single precision denormals.
static uint32_t getFPMode(const MachineFunction &) { static uint32_t getFPMode(const MachineFunction &) {
return FP_ROUND_MODE_SP(FP_ROUND_ROUND_TO_NEAREST) | return FP_ROUND_MODE_SP(FP_ROUND_ROUND_TO_NEAREST) |
FP_ROUND_MODE_DP(FP_ROUND_ROUND_TO_NEAREST) | FP_ROUND_MODE_DP(FP_ROUND_ROUND_TO_NEAREST) |
FP_DENORM_MODE_SP(FP_DENORM_FLUSH_NONE) | FP_DENORM_MODE_SP(FP_DENORM_FLUSH_IN_FLUSH_OUT) |
FP_DENORM_MODE_DP(FP_DENORM_FLUSH_NONE); FP_DENORM_MODE_DP(FP_DENORM_FLUSH_NONE);
} }

2
test/CodeGen/R600/default-fp-mode.ll
View File

@ -1,7 +1,7 @@
; RUN: llc -march=r600 -mcpu=SI < %s | FileCheck -check-prefix=SI %s ; RUN: llc -march=r600 -mcpu=SI < %s | FileCheck -check-prefix=SI %s
; SI-LABEL: @test_kernel ; SI-LABEL: @test_kernel
; SI: FloatMode: 240 ; SI: FloatMode: 192
; SI: IeeeMode: 0 ; SI: IeeeMode: 0
define void @test_kernel(float addrspace(1)* %out0, double addrspace(1)* %out1) nounwind { define void @test_kernel(float addrspace(1)* %out0, double addrspace(1)* %out1) nounwind {
store float 0.0, float addrspace(1)* %out0 store float 0.0, float addrspace(1)* %out0