| ; REQUIRES: asserts |
| ; RUN: opt < %s -indvars -disable-output -stats -info-output-file - | FileCheck %s |
| ; Check that IndVarSimplify is not creating unnecessary canonical IVs |
| ; that will never be used. |
| ; CHECK-NOT: indvars |
| |
| 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" |
| |
| @ue = external global i64 |
| |
| define i32 @foo() nounwind { |
| entry: |
| br label %bb38.i |
| |
| bb14.i27: |
| %t0 = load i64* @ue, align 8 |
| %t1 = sub i64 %t0, %i.0.i35 |
| %t2 = add i64 %t1, 1 |
| br i1 undef, label %bb15.i28, label %bb19.i31 |
| |
| bb15.i28: |
| br label %bb19.i31 |
| |
| bb19.i31: |
| %y.0.i = phi i64 [ %t2, %bb15.i28 ], [ %t2, %bb14.i27 ] |
| br label %bb35.i |
| |
| bb35.i: |
| br i1 undef, label %bb37.i, label %bb14.i27 |
| |
| bb37.i: |
| %t3 = add i64 %i.0.i35, 1 |
| br label %bb38.i |
| |
| bb38.i: |
| %i.0.i35 = phi i64 [ 1, %entry ], [ %t3, %bb37.i ] |
| br label %bb35.i |
| } |
