Mercurial > hg > CbC > CbC_llvm
comparison test/Transforms/IndVarSimplify/lftr-extend-const.ll @ 0:95c75e76d11b LLVM3.4
LLVM 3.4
| author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Thu, 12 Dec 2013 13:56:28 +0900 |
| parents | |
| children | 54457678186b |
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| -1:000000000000 | 0:95c75e76d11b |
|---|---|
| 1 ;RUN: opt -S %s -indvars | FileCheck %s | |
| 2 | |
| 3 ; CHECK-LABEL-LABEL: @foo( | |
| 4 ; CHECK-NOT: %lftr.wideiv = trunc i32 %indvars.iv.next to i16 | |
| 5 ; CHECK: %exitcond = icmp ne i32 %indvars.iv.next, 512 | |
| 6 define void @foo() #0 { | |
| 7 entry: | |
| 8 br label %for.body | |
| 9 | |
| 10 for.body: ; preds = %entry, %for.body | |
| 11 %i.01 = phi i16 [ 0, %entry ], [ %inc, %for.body ] | |
| 12 %conv2 = sext i16 %i.01 to i32 | |
| 13 call void @bar(i32 %conv2) #1 | |
| 14 %inc = add i16 %i.01, 1 | |
| 15 %cmp = icmp slt i16 %inc, 512 | |
| 16 br i1 %cmp, label %for.body, label %for.end | |
| 17 | |
| 18 for.end: ; preds = %for.body | |
| 19 ret void | |
| 20 } | |
| 21 | |
| 22 ; Check that post-incrementing the backedge taken count does not overflow. | |
| 23 ; CHECK-LABEL-LABEL: @postinc( | |
| 24 ; CHECK: icmp eq i32 %indvars.iv.next, 256 | |
| 25 define i32 @postinc() #0 { | |
| 26 entry: | |
| 27 br label %do.body | |
| 28 | |
| 29 do.body: ; preds = %do.body, %entry | |
| 30 %first.0 = phi i8 [ 0, %entry ], [ %inc, %do.body ] | |
| 31 %conv = zext i8 %first.0 to i32 | |
| 32 call void @bar(i32 %conv) #1 | |
| 33 %inc = add i8 %first.0, 1 | |
| 34 %cmp = icmp eq i8 %first.0, -1 | |
| 35 br i1 %cmp, label %do.end, label %do.body | |
| 36 | |
| 37 do.end: ; preds = %do.body | |
| 38 ret i32 0 | |
| 39 } | |
| 40 | |
| 41 declare void @bar(i32) | |
| 42 | |
| 43 attributes #0 = { nounwind uwtable } | |
| 44 attributes #1 = { nounwind } |