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Diffstat (limited to 'lib/Target/PowerPC/README.txt')
| -rw-r--r-- | lib/Target/PowerPC/README.txt | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/lib/Target/PowerPC/README.txt b/lib/Target/PowerPC/README.txt index a243543..5af108a 100644 --- a/lib/Target/PowerPC/README.txt +++ b/lib/Target/PowerPC/README.txt @@ -640,22 +640,19 @@ We compile: define i32 @bar(i32 %x) nounwind readnone ssp { entry: %0 = icmp eq i32 %x, 0 ; <i1> [#uses=1] - %neg = select i1 %0, i32 -1, i32 0 ; <i32> [#uses=1] + %neg = sext i1 %0 to i32 ; <i32> [#uses=1] ret i32 %neg } to: _bar: - cmplwi cr0, r3, 0 - li r3, -1 - beq cr0, LBB1_2 -; BB#1: ; %entry - li r3, 0 -LBB1_2: ; %entry + cntlzw r2, r3 + slwi r2, r2, 26 + srawi r3, r2, 31 blr -it would be much better to produce: +it would be better to produce: _bar: addic r3,r3,-1 |