Changes in directory llvm/lib/Target/X86:
README.txt updated: 1.164 -> 1.165
---
Log message:
add a note
---
Diffs of the changes: (+18 -0)
README.txt | 18 ++++++++++++++++++
1 files changed, 18 insertions(+)
Index: llvm/lib/Target/X86/README.txt
diff -u llvm/lib/Target/X86/README.txt:1.164
llvm/lib/Target/X86/README.txt:1.165
--- llvm/lib/Target/X86/README.txt:1.164 Wed Apr 11 00:34:00 2007
+++ llvm/lib/Target/X86/README.txt Sat Apr 14 18:06:09 2007
@@ -1049,3 +1049,21 @@
//===---------------------------------------------------------------------===//
+This:
+#include <xmmintrin.h>
+unsigned test(float f) {
+ return _mm_cvtsi128_si32( (__m128i) _mm_set_ss( f ));
+}
+
+Compiles to:
+_test:
+ movss 4(%esp), %xmm0
+ movd %xmm0, %eax
+ ret
+
+it should compile to a move from the stack slot directly into eax. DAGCombine
+has this xform, but it is currently disabled until the alignment fields of
+the load/store nodes are trustworthy.
+
+
+
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