| Sanjoy Das | c1a2977 | 2015-11-05 23:45:38 +0000 | [diff] [blame] | 1 | ; RUN: opt -S -indvars < %s | FileCheck %s |
| 2 | |
| 3 | target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| 4 | target triple = "x86_64-apple-macosx10.11.0" |
| 5 | |
| 6 | declare void @use(i1) |
| 7 | |
| 8 | define void @f(i32 %x) { |
| 9 | ; CHECK-LABEL: @f( |
| 10 | entry: |
| 11 | %conv = sext i32 %x to i64 |
| 12 | %sub = add i64 %conv, -1 |
| 13 | %ec = icmp sgt i32 %x, 0 |
| 14 | br i1 %ec, label %loop, label %leave |
| 15 | |
| 16 | loop: |
| 17 | ; CHECK: loop: |
| 18 | %iv = phi i64 [ 0, %entry ], [ %iv.inc, %loop ] |
| 19 | %iv.inc = add i64 %iv, 1 |
| 20 | %cmp = icmp slt i64 %iv, %sub |
| 21 | call void @use(i1 %cmp) |
| 22 | ; CHECK: call void @use(i1 %cmp) |
| 23 | ; CHECK-NOT: call void @use(i1 true) |
| 24 | |
| 25 | %be.cond = icmp slt i64 %iv.inc, %conv |
| 26 | br i1 %be.cond, label %loop, label %leave |
| 27 | |
| 28 | leave: |
| 29 | ret void |
| 30 | } |