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gallium/radeon: re-enable unsafe math for graphics shaders

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This reverts commit 4db985a5fa.

The grass no longer disappears, which was the reason the commit was reverted.
This might affect tessellation. We'll see.

Totals from affected shaders:
SGPRS: 151672 -> 150232 (-0.95 %)
VGPRS: 90620 -> 89776 (-0.93 %)
Code Size: 3980472 -> 3920836 (-1.50 %) bytes
LDS: 67 -> 67 (0.00 %) blocks
Scratch: 1357824 -> 1202176 (-11.46 %) bytes per wave

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
This commit is contained in:
Marek Olšák 2015-07-25 12:01:07 +02:00
parent 12a197b2d5
commit 8559f6ce62
1 changed files with 4 additions and 0 deletions
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4
src/gallium/drivers/radeon/radeon_llvm_emit.c
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@ -82,6 +82,10 @@ void radeon_llvm_shader_type(LLVMValueRef F, unsigned type)
sprintf(Str, "%1d", llvm_type);
LLVMAddTargetDependentFunctionAttr(F, "ShaderType", Str);
if (type != TGSI_PROCESSOR_COMPUTE) {
LLVMAddTargetDependentFunctionAttr(F, "unsafe-fp-math", "true");
}
}
static void init_r600_target()