Mesa (master): draw: Also emit EMMS on generated LLVM IR.

[Jose Fonseca]

Module: Mesa
Branch: master
Commit: 111902f2c47377f7d7ea41af6a2a29a087350f17
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=111902f2c47377f7d7ea41af6a2a29a087350f17

Author: José Fonseca <jfonseca at vmware.com>
Date:   Mon Jul 26 12:16:45 2010 +0100

draw: Also emit EMMS on generated LLVM IR.

---

 src/gallium/auxiliary/draw/draw_llvm.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/src/gallium/auxiliary/draw/draw_llvm.c b/src/gallium/auxiliary/draw/draw_llvm.c
index 19f96c3..48489e5 100644
--- a/src/gallium/auxiliary/draw/draw_llvm.c
+++ b/src/gallium/auxiliary/draw/draw_llvm.c
@@ -37,6 +37,7 @@
 #include "gallivm/lp_bld_debug.h"
 #include "gallivm/lp_bld_tgsi.h"
 #include "gallivm/lp_bld_printf.h"
+#include "gallivm/lp_bld_intr.h"
 
 #include "tgsi/tgsi_exec.h"
 #include "tgsi/tgsi_dump.h"
@@ -793,6 +794,11 @@ draw_llvm_generate(struct draw_llvm *llvm, struct draw_llvm_variant *variant)
 
    sampler->destroy(sampler);
 
+#ifdef PIPE_ARCH_X86
+   /* Avoid corrupting the FPU stack on 32bit OSes. */
+   lp_build_intrinsic(builder, "llvm.x86.mmx.emms", LLVMVoidType(), NULL, 0);
+#endif
+
    LLVMBuildRetVoid(builder);
 
    LLVMDisposeBuilder(builder);
@@ -963,6 +969,11 @@ draw_llvm_generate_elts(struct draw_llvm *llvm, struct draw_llvm_variant *varian
 
    sampler->destroy(sampler);
 
+#ifdef PIPE_ARCH_X86
+   /* Avoid corrupting the FPU stack on 32bit OSes. */
+   lp_build_intrinsic(builder, "llvm.x86.mmx.emms", LLVMVoidType(), NULL, 0);
+#endif
+
    LLVMBuildRetVoid(builder);
 
    LLVMDisposeBuilder(builder);