Mesa (master): radeonsi/gfx9: compile shaders with +xnack

[Marek Olšák]

Module: Mesa
Branch: master
Commit: 2beb31bd7c186641a2bb9abf6d2e13d42e43d944
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2beb31bd7c186641a2bb9abf6d2e13d42e43d944

Author: Marek Olšák <marek.olsak at amd.com>
Date:   Fri Apr  7 18:30:28 2017 +0200

radeonsi/gfx9: compile shaders with +xnack

so that LLVM doesn't allocate SGPRs where XNACK is.

Cc: 17.1 <mesa-stable at lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle at amd.com>

---

 src/gallium/drivers/radeonsi/si_pipe.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/gallium/drivers/radeonsi/si_pipe.c b/src/gallium/drivers/radeonsi/si_pipe.c
index eaa3348bcb..6f82e294bd 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.c
+++ b/src/gallium/drivers/radeonsi/si_pipe.c
@@ -33,9 +33,6 @@
 #include "vl/vl_decoder.h"
 #include "../ddebug/dd_util.h"
 
-#define SI_LLVM_DEFAULT_FEATURES \
-	"+DumpCode,+vgpr-spilling,-fp32-denormals,-xnack"
-
 /*
  * pipe_context
  */
@@ -127,12 +124,16 @@ static LLVMTargetMachineRef
 si_create_llvm_target_machine(struct si_screen *sscreen)
 {
 	const char *triple = "amdgcn--";
+	char features[256];
+
+	snprintf(features, sizeof(features),
+		 "+DumpCode,+vgpr-spilling,-fp32-denormals,+fp64-denormals%s%s",
+		 sscreen->b.chip_class >= GFX9 ? ",+xnack" : ",-xnack",
+		 sscreen->b.debug_flags & DBG_SI_SCHED ? ",+si-scheduler" : "");
 
 	return LLVMCreateTargetMachine(si_llvm_get_amdgpu_target(triple), triple,
 				       r600_get_llvm_processor_name(sscreen->b.family),
-				       sscreen->b.debug_flags & DBG_SI_SCHED ?
-					       SI_LLVM_DEFAULT_FEATURES ",+si-scheduler" :
-					       SI_LLVM_DEFAULT_FEATURES,
+				       features,
 				       LLVMCodeGenLevelDefault,
 				       LLVMRelocDefault,
 				       LLVMCodeModelDefault);