diff options
| author | Grigori Goronzy <[email protected]> | 2014-07-17 18:44:25 +0200 |
|---|---|---|
| committer | Tom Stellard <[email protected]> | 2014-07-23 10:40:33 -0400 |
| commit | 0e9cdedd2e3943bdb7f3543a3508b883b167e427 (patch) | |
| tree | d28669bce19f80ed81957e98843bbfc78a7146a1 | |
| parent | 467f1585e28adba0e94ef593de131bc327f098bb (diff) | |
radeon/llvm: enable unsafe math for graphics shaders
Accuracy of some operations was recently improved in the R600 backend,
at the cost of slower code. This is required for compute shaders,
but not for graphics shaders. Add unsafe-fp-math hint to make LLVM
generate faster but possibly less accurate code.
Piglit didn't indicate any regressions.
Reviewed-by: Tom Stellard <[email protected]>
| -rw-r--r-- | src/gallium/drivers/radeon/radeon_llvm_emit.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/gallium/drivers/radeon/radeon_llvm_emit.c b/src/gallium/drivers/radeon/radeon_llvm_emit.c index 1b17dd4613f..171ccaadd5c 100644 --- a/src/gallium/drivers/radeon/radeon_llvm_emit.c +++ b/src/gallium/drivers/radeon/radeon_llvm_emit.c @@ -26,6 +26,7 @@ #include "radeon_llvm_emit.h" #include "radeon_elf_util.h" #include "util/u_memory.h" +#include "pipe/p_shader_tokens.h" #include <llvm-c/Target.h> #include <llvm-c/TargetMachine.h> @@ -50,6 +51,10 @@ void radeon_llvm_shader_type(LLVMValueRef F, unsigned type) sprintf(Str, "%1d", type); LLVMAddTargetDependentFunctionAttr(F, "ShaderType", Str); + + if (type != TGSI_PROCESSOR_COMPUTE) { + LLVMAddTargetDependentFunctionAttr(F, "unsafe-fp-math", "true"); + } } static void init_r600_target() { |