Created
February 24, 2014 21:14
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| ; RUN: llc < %s -mtriple=arm-linux-unknown-gnueabi -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=Thumb-linux | |
| ; RUN: llc < %s -mtriple=arm-linux-androideabi -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=Thumb-android | |
| ; RUN: llc < %s -mtriple=arm-linux-unknown-gnueabi -segmented-stacks -filetype=obj | |
| ; RUN: llc < %s -mtriple=arm-linux-androideabi -segmented-stacks -filetype=obj | |
| ; Just to prevent the alloca from being optimized away | |
| declare void @dummy_use(i32*, i32) | |
| define i32 @test_basic(i32 %l) { | |
| %mem = alloca i32, i32 %l | |
| call void @dummy_use (i32* %mem, i32 %l) | |
| %terminate = icmp eq i32 %l, 0 | |
| br i1 %terminate, label %true, label %false | |
| true: | |
| ret i32 0 | |
| false: | |
| %newlen = sub i32 %l, 1 | |
| %retvalue = call i32 @test_basic(i32 %newlen) | |
| ret i32 %retvalue | |
| ; Thumb-linux: test_basic: | |
| ; Thumb-linux: push {r4, r5} | |
| ; Thumb-linux: mov r5, sp | |
| ; Thumb-linux-NEXT: ldr r4, .LCPI0_0 | |
| ; Thumb-linux-NEXT: ldr r4, [r4] | |
| ; Thumb-linux-NEXT: cmp r4, r5 | |
| ; Thumb-linux-NEXT: blo .LBB0_2 | |
| ; Thumb-linux: mov r4, #20 | |
| ; Thumb-linux-NEXT: mov r5, #0 | |
| ; Thumb-linux-NEXT: push {lr} | |
| ; Thumb-linux-NEXT: bl __morestack | |
| ; Thumb-linux-NEXT: pop {r4} | |
| ; Thumb-linux-NEXT: mov lr, r4 | |
| ; Thumb-linux-NEXT: pop {r4, r5} | |
| ; Thumb-linux-NEXT: mov pc, lr | |
| ; Thumb-linux: pop {r4, r5} | |
| ; Thumb-android: test_basic: | |
| ; Thumb-android: push {r4, r5} | |
| ; Thumb-android: mov r5, sp | |
| ; Thumb-android-NEXT: ldr r4, .LCPI0_0 | |
| ; Thumb-android-NEXT: ldr r4, [r4] | |
| ; Thumb-android-NEXT: cmp r4, r5 | |
| ; Thumb-android-NEXT: blo .LBB0_2 | |
| ; Thumb-android: mov r4, #20 | |
| ; Thumb-android-NEXT: mov r5, #0 | |
| ; Thumb-android-NEXT: push {lr} | |
| ; Thumb-android-NEXT: bl __morestack | |
| ; Thumb-android-NEXT: pop {r4} | |
| ; Thumb-android-NEXT: mov lr, r4 | |
| ; Thumb-android-NEXT: pop {r4, r5} | |
| ; Thumb-android-NEXT: mov pc, lr | |
| ; Thumb-android: pop {r4, r5} | |
| } |
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