| Dan Gohman | 36a0947 | 2009-09-08 23:54:48 +0000 | [diff] [blame^] | 1 | ; RUN: llc < %s -march=x86 | grep testl |
| Dan Gohman | 3112581 | 2009-03-07 01:58:32 +0000 | [diff] [blame] | 2 | |
| 3 | ; It's tempting to eliminate the testl instruction here and just use the |
| 4 | ; EFLAGS value from the incl, however it can't be known whether the add |
| 5 | ; will overflow, and if it does the incl would set OF, and the |
| 6 | ; subsequent setg would return true. |
| 7 | |
| 8 | target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" |
| 9 | target triple = "i386-apple-darwin9.6" |
| 10 | |
| 11 | define i32 @f(i32 %j) nounwind readnone { |
| 12 | entry: |
| 13 | %0 = add i32 %j, 1 ; <i32> [#uses=1] |
| 14 | %1 = icmp sgt i32 %0, 0 ; <i1> [#uses=1] |
| 15 | %2 = zext i1 %1 to i32 ; <i32> [#uses=1] |
| 16 | ret i32 %2 |
| 17 | } |