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comparison test/Transforms/IndVarSimplify/2011-09-10-widen-nsw.ll @ 77:54457678186b LLVM3.6

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LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
parents 95c75e76d11b
children 60c9769439b8
comparison
equal deleted inserted replaced
34:e874dbf0ad9d 77:54457678186b
1 ; RUN: opt < %s -indvars -S | FileCheck %s 1 ; RUN: opt < %s -indvars -S | FileCheck %s
2 ; Test WidenIV::GetExtendedOperandRecurrence. 2 ; Test WidenIV::GetExtendedOperandRecurrence.
3 ; add219 should be extended to i64 because it is nsw, even though its 3 ; %add, %sub and %mul should be extended to i64 because it is nsw, even though its
4 ; sext cannot be hoisted outside the loop. 4 ; sext cannot be hoisted outside the loop.
5 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" 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 7
8 define void @test() nounwind { 8 define void @test() nounwind {
16 16
17 for.body153: ; preds = %for.body153, %for.body11 17 for.body153: ; preds = %for.body153, %for.body11
18 br i1 undef, label %for.body170, label %for.body153 18 br i1 undef, label %for.body170, label %for.body153
19 19
20 ; CHECK: add nsw i64 %indvars.iv, 1 20 ; CHECK: add nsw i64 %indvars.iv, 1
21 ; CHECK: sub nsw i64 %indvars.iv, 2
22 ; CHECK: mul nsw i64 %indvars.iv, 4
21 for.body170: ; preds = %for.body170, %for.body153 23 for.body170: ; preds = %for.body170, %for.body153
22 %i2.19 = phi i32 [ %add249, %for.body170 ], [ 0, %for.body153 ] 24 %i2.19 = phi i32 [ %add249, %for.body170 ], [ 0, %for.body153 ]
23 %add219 = add nsw i32 %i2.19, 1 25
24 %idxprom220 = sext i32 %add219 to i64 26 %add = add nsw i32 %i2.19, 1
27 %add.idxprom = sext i32 %add to i64
28
29 %sub = sub nsw i32 %i2.19, 2
30 %sub.idxprom = sext i32 %sub to i64
31
32 %mul = mul nsw i32 %i2.19, 4
33 %mul.idxprom = sext i32 %mul to i64
34
25 %add249 = add nsw i32 %i2.19, %shl132 35 %add249 = add nsw i32 %i2.19, %shl132
26 br label %for.body170 36 br label %for.body170
27
28 for.end285: ; preds = %entry 37 for.end285: ; preds = %entry
29 ret void 38 ret void
30 } 39 }