| Evan Cheng | 3f251fb | 2010-08-10 19:30:19 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -mtriple=thumbv7-apple-darwin -mcpu=cortex-a8 -O3 | FileCheck %s |
| 2 | |
| 3 | @.str = private constant [4 x i8] c"%d\0A\00", align 4 ; <[4 x i8]*> [#uses=1] |
| 4 | |
| 5 | define internal fastcc i32 @Callee(i32 %i) nounwind { |
| 6 | entry: |
| 7 | ; CHECK: Callee: |
| Evan Cheng | eb56dca | 2010-11-22 18:12:04 +0000 | [diff] [blame] | 8 | ; CHECK: push |
| 9 | ; CHECK: mov r4, sp |
| 10 | ; CHECK: sub.w r12, r4, #1000 |
| 11 | ; CHECK: mov sp, r12 |
| Evan Cheng | 3f251fb | 2010-08-10 19:30:19 +0000 | [diff] [blame] | 12 | %0 = icmp eq i32 %i, 0 ; <i1> [#uses=1] |
| 13 | br i1 %0, label %bb2, label %bb |
| 14 | |
| 15 | bb: ; preds = %entry |
| 16 | %1 = alloca [1000 x i8], align 4 ; <[1000 x i8]*> [#uses=1] |
| 17 | %.sub = getelementptr inbounds [1000 x i8]* %1, i32 0, i32 0 ; <i8*> [#uses=2] |
| 18 | %2 = call i32 (i8*, i32, i32, i8*, ...)* @__sprintf_chk(i8* %.sub, i32 0, i32 1000, i8* getelementptr inbounds ([4 x i8]* @.str, i32 0, i32 0), i32 %i) nounwind ; <i32> [#uses=0] |
| 19 | %3 = load i8* %.sub, align 4 ; <i8> [#uses=1] |
| 20 | %4 = sext i8 %3 to i32 ; <i32> [#uses=1] |
| 21 | ret i32 %4 |
| 22 | |
| 23 | bb2: ; preds = %entry |
| Evan Cheng | eb56dca | 2010-11-22 18:12:04 +0000 | [diff] [blame] | 24 | ; Must restore sp from fp here. Make sure not to leave sp in a temporarily invalid |
| 25 | ; state though. rdar://8465407 |
| 26 | ; CHECK-NOT: mov sp, r7 |
| 27 | ; CHECK: sub.w r4, r7, #8 |
| 28 | ; CHECK: mov sp, r4 |
| Evan Cheng | 3f251fb | 2010-08-10 19:30:19 +0000 | [diff] [blame] | 29 | ; CHECK: pop |
| 30 | ret i32 0 |
| 31 | } |
| 32 | |
| 33 | declare i32 @__sprintf_chk(i8*, i32, i32, i8*, ...) nounwind |
| 34 | |
| 35 | define i32 @main() nounwind { |
| 36 | ; CHECK: main: |
| 37 | bb.nph: |
| 38 | br label %bb |
| 39 | |
| 40 | bb: ; preds = %bb, %bb.nph |
| 41 | %0 = phi i32 [ 0, %bb.nph ], [ %3, %bb ] ; <i32> [#uses=2] |
| 42 | %j.01 = phi i32 [ 0, %bb.nph ], [ %2, %bb ] ; <i32> [#uses=1] |
| 43 | %1 = tail call fastcc i32 @Callee(i32 %0) nounwind ; <i32> [#uses=1] |
| 44 | %2 = add nsw i32 %1, %j.01 ; <i32> [#uses=2] |
| 45 | %3 = add nsw i32 %0, 1 ; <i32> [#uses=2] |
| 46 | %exitcond = icmp eq i32 %3, 10000 ; <i1> [#uses=1] |
| 47 | br i1 %exitcond, label %bb2, label %bb |
| 48 | |
| 49 | bb2: ; preds = %bb |
| 50 | ; No need to restore sp from fp here. |
| 51 | ; CHECK: printf |
| 52 | ; CHECK-NOT: mov sp, r7 |
| 53 | ; CHECK-NOT: sub sp, #12 |
| 54 | ; CHECK: pop |
| 55 | %4 = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([4 x i8]* @.str, i32 0, i32 0), i32 %2) nounwind ; <i32> [#uses=0] |
| 56 | ret i32 0 |
| 57 | } |
| 58 | |
| 59 | declare i32 @printf(i8* nocapture, ...) nounwind |