| Dan Gohman | 400f75c | 2010-06-03 20:21:33 +0000 | [diff] [blame^] | 1 | ; RUN: llc < %s | FileCheck %s |
| 2 | ; rdar://8051990 |
| 3 | |
| 4 | 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-n8:16:32:64" |
| 5 | target triple = "x86_64-apple-darwin11" |
| 6 | |
| 7 | ; ISel doesn't yet know how to eliminate this extra zero-extend. But until |
| 8 | ; it knows how to do so safely, it shouldn;t eliminate it. |
| 9 | ; CHECK: movzbl (%rdi), %eax |
| 10 | ; CHECK: movzwl %ax, %eax |
| 11 | |
| 12 | define i64 @_ZL5matchPKtPKhiR9MatchData(i8* %tmp13) nounwind { |
| 13 | entry: |
| 14 | %tmp14 = load i8* %tmp13, align 1 |
| 15 | %tmp17 = zext i8 %tmp14 to i16 |
| 16 | br label %bb341 |
| 17 | |
| 18 | bb341: |
| 19 | %tmp18 = add i16 %tmp17, -1 |
| 20 | %tmp23 = sext i16 %tmp18 to i64 |
| 21 | ret i64 %tmp23 |
| 22 | } |