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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27832 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-04-19 16:22:38 +00:00
parent 9df47b5928
commit 8cc5ffb27f
1 changed files with 31 additions and 0 deletions
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31
lib/Target/PowerPC/README_ALTIVEC.txt
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@ -138,3 +138,34 @@ _test:
blr
//===----------------------------------------------------------------------===//
int foo(vector float *x, vector float *y) {
if (vec_all_eq(*x,*y)) return 3245;
else return 12;
}
A predicate compare being used in a select_cc should have the same peephole
applied to it as a predicate compare used by a br_cc. There should be no
mfcr here:
_foo:
mfspr r2, 256
oris r5, r2, 12288
mtspr 256, r5
li r5, 12
li r6, 3245
lvx v2, 0, r4
lvx v3, 0, r3
vcmpeqfp. v2, v3, v2
mfcr r3, 2
rlwinm r3, r3, 25, 31, 31
cmpwi cr0, r3, 0
bne cr0, LBB1_2 ; entry
LBB1_1: ; entry
mr r6, r5
LBB1_2: ; entry
mr r3, r6
mtspr 256, r2
blr
//===----------------------------------------------------------------------===//