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authorBrian Paul <brianp@vmware.com>2010-01-27 17:16:42 -0700
committerBrian Paul <brianp@vmware.com>2010-01-27 17:16:42 -0700
commit36a0819ff4ede1af91dcf909106cf20659856384 (patch)
treebfea9aa2e5ed45bf2e8e42cb8b5b7091bf5c0c9c /src/gallium/drivers
parente95ad2a2b521514eaec04f9b266ee030ecc639a3 (diff)
llvmpipe: added debug option to disable LLVM optimization passes
Diffstat (limited to 'src/gallium/drivers')
-rw-r--r--src/gallium/drivers/llvmpipe/lp_debug.h1
-rw-r--r--src/gallium/drivers/llvmpipe/lp_jit.c30
-rw-r--r--src/gallium/drivers/llvmpipe/lp_screen.c1
3 files changed, 19 insertions, 13 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_debug.h b/src/gallium/drivers/llvmpipe/lp_debug.h
index 7e04bd471e..ee81814361 100644
--- a/src/gallium/drivers/llvmpipe/lp_debug.h
+++ b/src/gallium/drivers/llvmpipe/lp_debug.h
@@ -48,6 +48,7 @@ st_print_current(void);
#define DEBUG_SHOW_TILES 0x200
#define DEBUG_SHOW_SUBTILES 0x400
#define DEBUG_COUNTERS 0x800
+#define DEBUG_NO_LLVM_OPT 0x1000
#ifdef DEBUG
diff --git a/src/gallium/drivers/llvmpipe/lp_jit.c b/src/gallium/drivers/llvmpipe/lp_jit.c
index 429cb973c2..9fad7033db 100644
--- a/src/gallium/drivers/llvmpipe/lp_jit.c
+++ b/src/gallium/drivers/llvmpipe/lp_jit.c
@@ -37,6 +37,7 @@
#include "util/u_memory.h"
#include "util/u_cpu_detect.h"
+#include "lp_debug.h"
#include "lp_screen.h"
#include "lp_bld_intr.h"
#include "lp_bld_misc.h"
@@ -165,20 +166,23 @@ lp_jit_screen_init(struct llvmpipe_screen *screen)
screen->pass = LLVMCreateFunctionPassManager(screen->provider);
LLVMAddTargetData(screen->target, screen->pass);
- /* These are the passes currently listed in llvm-c/Transforms/Scalar.h,
- * but there are more on SVN. */
- /* TODO: Add more passes */
- LLVMAddConstantPropagationPass(screen->pass);
- if(util_cpu_caps.has_sse4_1) {
- /* FIXME: There is a bug in this pass, whereby the combination of fptosi
- * and sitofp (necessary for trunc/floor/ceil/round implementation)
- * somehow becomes invalid code.
- */
- LLVMAddInstructionCombiningPass(screen->pass);
+
+ if ((LP_DEBUG & DEBUG_NO_LLVM_OPT) == 0) {
+ /* These are the passes currently listed in llvm-c/Transforms/Scalar.h,
+ * but there are more on SVN. */
+ /* TODO: Add more passes */
+ LLVMAddConstantPropagationPass(screen->pass);
+ if(util_cpu_caps.has_sse4_1) {
+ /* FIXME: There is a bug in this pass, whereby the combination of fptosi
+ * and sitofp (necessary for trunc/floor/ceil/round implementation)
+ * somehow becomes invalid code.
+ */
+ LLVMAddInstructionCombiningPass(screen->pass);
+ }
+ LLVMAddPromoteMemoryToRegisterPass(screen->pass);
+ LLVMAddGVNPass(screen->pass);
+ LLVMAddCFGSimplificationPass(screen->pass);
}
- LLVMAddPromoteMemoryToRegisterPass(screen->pass);
- LLVMAddGVNPass(screen->pass);
- LLVMAddCFGSimplificationPass(screen->pass);
lp_jit_init_globals(screen);
}
diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c
index 9dd4ea7ef6..a3adc81e9f 100644
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -55,6 +55,7 @@ static const struct debug_named_value lp_debug_flags[] = {
{ "show_tiles", DEBUG_SHOW_TILES },
{ "show_subtiles", DEBUG_SHOW_SUBTILES },
{ "counters", DEBUG_COUNTERS },
+ { "nopt", DEBUG_NO_LLVM_OPT },
{NULL, 0}
};
#endif