Mercurial > hg > CbC > CbC_llvm
comparison test/Transforms/IndVarSimplify/2011-09-10-widen-nsw.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 -indvars -S | FileCheck %s | |
| 2 ; Test WidenIV::GetExtendedOperandRecurrence. | |
| 3 ; add219 should be extended to i64 because it is nsw, even though its | |
| 4 ; sext cannot be hoisted outside the loop. | |
| 5 | |
| 6 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" | |
| 7 | |
| 8 define void @test() nounwind { | |
| 9 entry: | |
| 10 br i1 undef, label %for.body11, label %for.end285 | |
| 11 | |
| 12 for.body11: ; preds = %entry | |
| 13 %shl = shl i32 1, 1 | |
| 14 %shl132 = shl i32 %shl, 1 | |
| 15 br label %for.body153 | |
| 16 | |
| 17 for.body153: ; preds = %for.body153, %for.body11 | |
| 18 br i1 undef, label %for.body170, label %for.body153 | |
| 19 | |
| 20 ; CHECK: add nsw i64 %indvars.iv, 1 | |
| 21 for.body170: ; preds = %for.body170, %for.body153 | |
| 22 %i2.19 = phi i32 [ %add249, %for.body170 ], [ 0, %for.body153 ] | |
| 23 %add219 = add nsw i32 %i2.19, 1 | |
| 24 %idxprom220 = sext i32 %add219 to i64 | |
| 25 %add249 = add nsw i32 %i2.19, %shl132 | |
| 26 br label %for.body170 | |
| 27 | |
| 28 for.end285: ; preds = %entry | |
| 29 ret void | |
| 30 } |