Mercurial > hg > CbC > CbC_llvm
comparison test/CodeGen/AArch64/arm64-icmp-opt.ll @ 77:54457678186b LLVM3.6
LLVM 3.6
| author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 08 Sep 2014 22:06:00 +0900 |
| parents | |
| children | 1172e4bd9c6f |
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| 34:e874dbf0ad9d | 77:54457678186b |
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| 1 ; RUN: llc < %s -march=arm64 | FileCheck %s | |
| 2 | |
| 3 ; Optimize (x > -1) to (x >= 0) etc. | |
| 4 ; Optimize (cmp (add / sub), 0): eliminate the subs used to update flag | |
| 5 ; for comparison only | |
| 6 ; rdar://10233472 | |
| 7 | |
| 8 define i32 @t1(i64 %a) nounwind ssp { | |
| 9 entry: | |
| 10 ; CHECK-LABEL: t1: | |
| 11 ; CHECK-NOT: movn | |
| 12 ; CHECK: cmp x0, #0 | |
| 13 ; CHECK: cset w0, ge | |
| 14 %cmp = icmp sgt i64 %a, -1 | |
| 15 %conv = zext i1 %cmp to i32 | |
| 16 ret i32 %conv | |
| 17 } |