Changes in directory llvm/lib/Target/X86:
README.txt updated: 1.76 -> 1.77
---
Log message:
Update
---
Diffs of the changes: (+2 -23)
README.txt | 25 ++-----------------------
1 files changed, 2 insertions(+), 23 deletions(-)
Index: llvm/lib/Target/X86/README.txt
diff -u llvm/lib/Target/X86/README.txt:1.76 llvm/lib/Target/X86/README.txt:1.77
--- llvm/lib/Target/X86/README.txt:1.76 Mon Mar 27 20:49:12 2006
+++ llvm/lib/Target/X86/README.txt Tue Mar 28 00:55:45 2006
@@ -665,26 +665,5 @@
//===---------------------------------------------------------------------===//
-Is it really a good idea to use movlhps to move 1 double-precision FP value
from
-low quadword of source to high quadword of destination?
-
-e.g.
-
-void test2 (v2sd *b, double X, double Y) {
- v2sd a = (v2sd) {X, X*Y};
- *b = a;
-}
-
- movsd 8(%esp), %xmm0
- movapd %xmm0, %xmm1
- mulsd 16(%esp), %xmm1
- movlhps %xmm1, %xmm0
- movl 4(%esp), %eax
- movapd %xmm0, (%eax)
- ret
-
-icc uses unpcklpd instead.
-
-//===---------------------------------------------------------------------===//
-
-Use movhps and movlhps to update upper 64-bits of a v4sf value.
+Use movhps to update upper 64-bits of a v4sf value. Also movlps on lower half
+of a v4sf value.
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