| Jan Wen Voung | 6dc3076 | 2013-03-12 16:27:52 +0000 | [diff] [blame] | 1 | ; REQUIRES: asserts |
| Andrew Trick | 1ea0243 | 2011-05-24 00:17:53 +0000 | [diff] [blame] | 2 | ; RUN: opt < %s -indvars -disable-output -stats -info-output-file - | FileCheck %s |
| 3 | ; Check that IndVarSimplify is not creating unnecessary canonical IVs |
| 4 | ; that will never be used. |
| 5 | ; CHECK-NOT: indvars |
| 6 | |
| Dan Gohman | fe174b6 | 2009-06-27 05:16:57 +0000 | [diff] [blame] | 7 | 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" |
| 8 | |
| 9 | @ue = external global i64 |
| 10 | |
| 11 | define i32 @foo() nounwind { |
| 12 | entry: |
| 13 | br label %bb38.i |
| 14 | |
| 15 | bb14.i27: |
| David Blaikie | a79ac14 | 2015-02-27 21:17:42 +0000 | [diff] [blame] | 16 | %t0 = load i64, i64* @ue, align 8 |
| Dan Gohman | fe174b6 | 2009-06-27 05:16:57 +0000 | [diff] [blame] | 17 | %t1 = sub i64 %t0, %i.0.i35 |
| 18 | %t2 = add i64 %t1, 1 |
| 19 | br i1 undef, label %bb15.i28, label %bb19.i31 |
| 20 | |
| 21 | bb15.i28: |
| 22 | br label %bb19.i31 |
| 23 | |
| 24 | bb19.i31: |
| 25 | %y.0.i = phi i64 [ %t2, %bb15.i28 ], [ %t2, %bb14.i27 ] |
| 26 | br label %bb35.i |
| 27 | |
| 28 | bb35.i: |
| 29 | br i1 undef, label %bb37.i, label %bb14.i27 |
| 30 | |
| 31 | bb37.i: |
| 32 | %t3 = add i64 %i.0.i35, 1 |
| 33 | br label %bb38.i |
| 34 | |
| 35 | bb38.i: |
| 36 | %i.0.i35 = phi i64 [ 1, %entry ], [ %t3, %bb37.i ] |
| 37 | br label %bb35.i |
| 38 | } |