| Dan Gohman | 1880092 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -instcombine -S | grep {store i8} | count 2 |
| Eli Friedman | 5de0a77 | 2008-06-13 22:02:12 +0000 | [diff] [blame] | 2 | |
| 3 | define i32 @a(i8* %s) nounwind { |
| 4 | entry: |
| 5 | store i8 0, i8* %s, align 1 ; This store cannot be eliminated! |
| 6 | %tmp3 = call i32 @strlen( i8* %s ) nounwind readonly |
| 7 | %tmp5 = icmp ne i32 %tmp3, 0 |
| 8 | br i1 %tmp5, label %bb, label %bb8 |
| 9 | |
| 10 | bb: ; preds = %entry |
| 11 | store i8 0, i8* %s, align 1 |
| 12 | br label %bb8 |
| 13 | |
| 14 | bb8: |
| 15 | ret i32 %tmp3 |
| 16 | } |
| 17 | |
| 18 | declare i32 @strlen(i8*) nounwind readonly |
| 19 | |