Changes in directory llvm/lib/Target:
README.txt updated: 1.38 -> 1.39
---
Log message:
This is closer to what we really want.
---
Diffs of the changes: (+3 -2)
README.txt | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
Index: llvm/lib/Target/README.txt
diff -u llvm/lib/Target/README.txt:1.38 llvm/lib/Target/README.txt:1.39
--- llvm/lib/Target/README.txt:1.38 Sat Sep 16 18:57:51 2006
+++ llvm/lib/Target/README.txt Sun Sep 17 23:54:35 2006
@@ -260,12 +260,13 @@
Where MAX_UNSIGNED/state is a 64-bit int. On a 32-bit platform it would be
just
so cool to turn it into something like:
+ long long Res = ((MAX_UNSIGNED) 1 << target);
if (target < 32) {
for(i=0; i<reg->size; i++)
- reg->node[i].state ^= ((int) (1 << target));
+ reg->node[i].state ^= Res & 0xFFFFFFFFULL;
} else {
for(i=0; i<reg->size; i++)
- reg->node[i].state ^= (long long)((int) (1 << (target-32))) << 32;
+ reg->node[i].state ^= Res & 0xFFFFFFFF00000000ULL
}
... which would only do one 32-bit XOR per loop iteration instead of two.
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