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authorSamuel Pitoiset <[email protected]>2018-01-15 14:51:45 +0100
committerSamuel Pitoiset <[email protected]>2018-01-16 21:39:57 +0100
commit05f73b96721518314729e49b7cadfb2d915a9ff5 (patch)
tree6accd3c81734512bc91c5c6ca26d707df440b798 /src/amd
parent4f5318df2cba4f4a455cf3a5aaa020908806987d (diff)
ac: set no-signed-zeros-fp-math when RADV_DEBUG="unsafemath" is used
This is an optimisation that is recommended by Matt Arsenault, and used by RadeonSI, but it's not compatible with Vulkan. Note that AC_FLOAT_MODE_UNSAFE_FP_MATH includes the no signed zeros flag in LLVM. Signed-off-by: Samuel Pitoiset <[email protected]> Reviewed-by: Bas Nieuwenhuizen <[email protected]>
Diffstat (limited to 'src/amd')
-rw-r--r--src/amd/common/ac_nir_to_llvm.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index 635a74d2430..5a8ddf13d7b 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -352,6 +352,9 @@ create_llvm_function(LLVMContextRef ctx, LLVMModuleRef module,
LLVMAddTargetDependentFunctionAttr(main_function,
"unsafe-fp-math",
"true");
+ LLVMAddTargetDependentFunctionAttr(main_function,
+ "no-signed-zeros-fp-math",
+ "true");
}
return main_function;
}