[Mesa-dev] [PATCH 3/3] radeon/llvm: Add TargetLibraryInfo to the pass manager

[Tom Stellard]

This will prevent optimization passes from introducing unsupported
library calls.
---
 src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
index d03ba4b..609da39 100644
--- a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
+++ b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
@@ -30,6 +30,7 @@
 #include "gallivm/lp_bld_flow.h"
 #include "gallivm/lp_bld_init.h"
 #include "gallivm/lp_bld_intr.h"
+#include "gallivm/lp_bld_misc.h"
 #include "gallivm/lp_bld_swizzle.h"
 #include "tgsi/tgsi_info.h"
 #include "tgsi/tgsi_parse.h"
@@ -1645,6 +1646,8 @@ void radeon_llvm_create_func(struct radeon_llvm_context * ctx,
 void radeon_llvm_finalize_module(struct radeon_llvm_context * ctx)
 {
 	struct gallivm_state * gallivm = ctx->soa.bld_base.base.gallivm;
+	const char *triple = LLVMGetTarget(gallivm->module);
+	LLVMTargetLibraryInfoRef target_library_info;
 	/* End the main function with Return*/
 	LLVMBuildRetVoid(gallivm->builder);
 
@@ -1652,6 +1655,9 @@ void radeon_llvm_finalize_module(struct radeon_llvm_context * ctx)
 	ctx->gallivm.passmgr = LLVMCreateFunctionPassManagerForModule(
 							gallivm->module);
 
+	target_library_info = gallivm_create_target_library_info(triple);
+	LLVMAddTargetLibraryInfo(target_library_info, gallivm->passmgr);
+
 	/* This pass should eliminate all the load and store instructions */
 	LLVMAddPromoteMemoryToRegisterPass(gallivm->passmgr);
 
@@ -1667,7 +1673,7 @@ void radeon_llvm_finalize_module(struct radeon_llvm_context * ctx)
 
 	LLVMDisposeBuilder(gallivm->builder);
 	LLVMDisposePassManager(gallivm->passmgr);
-
+	gallivm_dispose_target_library_info(target_library_info);
 }
 
 void radeon_llvm_dispose(struct radeon_llvm_context * ctx)
-- 
2.0.4