| Dan Gohman | f2f6ce6 | 2009-09-11 18:01:28 +0000 | [diff] [blame^] | 1 | ; RUN: opt < %s -analyze -scalar-evolution -disable-output |
| Dan Gohman | 08d4ec0 | 2009-07-13 22:30:31 +0000 | [diff] [blame] | 2 | ; PR4537 |
| 3 | |
| 4 | ; ModuleID = 'b.bc' |
| 5 | 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" |
| 6 | target triple = "x86_64-unknown-linux-gnu" |
| 7 | |
| 8 | define i32 @test() { |
| 9 | entry: |
| 10 | %0 = load i32** undef, align 8 ; <i32*> [#uses=1] |
| 11 | %1 = ptrtoint i32* %0 to i64 ; <i64> [#uses=1] |
| 12 | %2 = sub i64 undef, %1 ; <i64> [#uses=1] |
| 13 | %3 = lshr i64 %2, 3 ; <i64> [#uses=1] |
| 14 | %4 = trunc i64 %3 to i32 ; <i32> [#uses=2] |
| 15 | br i1 undef, label %bb10, label %bb4.i |
| 16 | |
| 17 | bb4.i: ; preds = %bb4.i, %entry |
| 18 | %i.0.i6 = phi i32 [ %8, %bb4.i ], [ 0, %entry ] ; <i32> [#uses=2] |
| 19 | %5 = sub i32 %4, %i.0.i6 ; <i32> [#uses=1] |
| 20 | %6 = sext i32 %5 to i64 ; <i64> [#uses=1] |
| 21 | %7 = udiv i64 undef, %6 ; <i64> [#uses=1] |
| 22 | %8 = add i32 %i.0.i6, 1 ; <i32> [#uses=2] |
| 23 | %phitmp = icmp eq i64 %7, 0 ; <i1> [#uses=1] |
| 24 | %.not.i = icmp sge i32 %8, %4 ; <i1> [#uses=1] |
| 25 | %or.cond.i = or i1 %phitmp, %.not.i ; <i1> [#uses=1] |
| 26 | br i1 %or.cond.i, label %bb10, label %bb4.i |
| 27 | |
| 28 | bb10: ; preds = %bb4.i, %entry |
| 29 | unreachable |
| 30 | } |