| Eric Christopher | 94bb7b5 | 2011-01-11 00:16:04 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -mtriple=thumbv6-apple-darwin | FileCheck %s |
| 2 | ; rdar://8819685 |
| 3 | |
| 4 | @__bar = external hidden global i8* |
| 5 | @__baz = external hidden global i8* |
| 6 | |
| 7 | define i8* @_foo() { |
| 8 | entry: |
| 9 | ; CHECK: foo: |
| 10 | |
| 11 | %size = alloca i32, align 4 |
| 12 | %0 = load i8** @__bar, align 4 |
| 13 | %1 = icmp eq i8* %0, null |
| 14 | br i1 %1, label %bb1, label %bb3 |
| 15 | |
| 16 | bb1: |
| 17 | store i32 1026, i32* %size, align 4 |
| 18 | %2 = alloca [1026 x i8], align 1 |
| 19 | ; CHECK: mov r0, sp |
| 20 | ; CHECK: adds r4, r0, r4 |
| 21 | %3 = getelementptr inbounds [1026 x i8]* %2, i32 0, i32 0 |
| 22 | %4 = call i32 @_called_func(i8* %3, i32* %size) nounwind |
| 23 | %5 = icmp eq i32 %4, 0 |
| 24 | br i1 %5, label %bb2, label %bb3 |
| 25 | |
| 26 | bb2: |
| 27 | %6 = call i8* @strdup(i8* %3) nounwind |
| 28 | store i8* %6, i8** @__baz, align 4 |
| 29 | br label %bb3 |
| 30 | |
| 31 | bb3: |
| 32 | %.0 = phi i8* [ %0, %entry ], [ %6, %bb2 ], [ %3, %bb1 ] |
| 33 | ; CHECK: subs r4, #5 |
| 34 | ; CHECK-NEXT: mov sp, r4 |
| 35 | ; CHECK-NEXT: pop {r4, r5, r6, r7, pc} |
| 36 | ret i8* %.0 |
| 37 | } |
| 38 | |
| 39 | declare noalias i8* @strdup(i8* nocapture) nounwind |
| 40 | declare i32 @_called_func(i8*, i32*) nounwind |