AlexIndustrial/mesa
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ac: reassociate FP expressions for inexact instructions for radeonsi

Browse Source 
Totals:
SGPRS: 2591784 -> 2590696 (-0.04 %)
VGPRS: 1666888 -> 1666736 (-0.01 %)
Spilled SGPRs: 4131 -> 4107 (-0.58 %)
Spilled VGPRs: 38 -> 38 (0.00 %)
Private memory VGPRs: 2176 -> 2176 (0.00 %)
Scratch size: 2228 -> 2228 (0.00 %) dwords per thread
Code Size: 52715468 -> 52693584 (-0.04 %) bytes
LDS: 92 -> 92 (0.00 %) blocks
Max Waves: 479897 -> 479892 (-0.00 %)
Wait states: 0 -> 0 (0.00 %)

Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4696>
This commit is contained in:
Marek Olšák
2020-04-22 23:01:28 -04:00
committed by Marge Bot
parent 4b9370cb0f
commit cf2f3c2753
1 changed files with 9 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/amd/llvm/ac_llvm_helper.cpp
+9
View File
@@ -101,6 +101,11 @@ LLVMBuilderRef ac_create_builder(LLVMContextRef ctx,
*/
flags.setAllowContract(); /* contract */
/* Allow reassociation transformations for floating-point
* instructions. This may dramatically change results.
*/
flags.setAllowReassoc(); /* reassoc */
llvm::unwrap(builder)->setFastMathFlags(flags);
break;
}
@@ -113,11 +118,13 @@ bool ac_disable_inexact_math(LLVMBuilderRef builder)
{
auto *b = llvm::unwrap(builder);
llvm::FastMathFlags flags = b->getFastMathFlags();
assert(flags.allowContract() == flags.allowReassoc());
if (!flags.allowContract())
return false;
flags.setAllowContract(false);
flags.setAllowReassoc(false);
b->setFastMathFlags(flags);
return true;
}
@@ -126,11 +133,13 @@ void ac_restore_inexact_math(LLVMBuilderRef builder, bool value)
{
auto *b = llvm::unwrap(builder);
llvm::FastMathFlags flags = b->getFastMathFlags();
assert(flags.allowContract() == flags.allowReassoc());
if (flags.allowContract() == value)
return;
flags.setAllowContract(value);
flags.setAllowReassoc(value);
b->setFastMathFlags(flags);
}