| Gerolf Hoflehner | ec6217c | 2014-11-21 23:36:44 +0000 | [diff] [blame] | 1 | ; do not replace a 'select' with 'or' in 'select - cmp - br' sequence |
| 2 | ; RUN: opt -instcombine -S < %s | FileCheck %s |
| 3 | target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| 4 | target triple = "x86_64-unknown-linux-gnu" |
| 5 | |
| 6 | declare void @f(i32) |
| 7 | |
| 8 | define void @test(i32 %len) { |
| 9 | entry: |
| 10 | %cmp = icmp ult i32 %len, 8 |
| 11 | %cond = select i1 %cmp, i32 %len, i32 8 |
| 12 | %cmp11 = icmp ult i32 0, %cond |
| 13 | br i1 %cmp11, label %for.body, label %for.end |
| 14 | |
| 15 | for.body: ; preds = %entry, %for.body |
| 16 | %i.02 = phi i32 [ %inc, %for.body ], [ 0, %entry ] |
| 17 | tail call void @f(i32 %cond) |
| 18 | %inc = add i32 %i.02, 1 |
| 19 | %cmp1 = icmp ult i32 %inc, %cond |
| 20 | br i1 %cmp1, label %for.body, label %for.end |
| 21 | |
| 22 | for.end: ; preds = %for.body, %entry |
| 23 | ret void |
| 24 | ; CHECK: select |
| 25 | } |