Created
February 24, 2014 21:14
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| ; RUN: llc < %s -mtriple=arm-linux-androideabi -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=ARM-android | |
| ; RUN: llc < %s -mtriple=arm-linux-unknown-gnueabi -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=ARM-linux | |
| ; RUN: llc < %s -mtriple=arm-linux-androideabi -segmented-stacks -filetype=obj | |
| ; RUN: llc < %s -mtriple=arm-linux-unknown-gnueabi -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 | |
| ; ARM-linux: test_basic: | |
| ; ARM-linux: push {r4, r5} | |
| ; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3 | |
| ; ARM-linux-NEXT: mov r5, sp | |
| ; ARM-linux-NEXT: cmp r4, #0 | |
| ; ARM-linux-NEXT: mvneq r4, #61440 | |
| ; ARM-linux-NEXT: ldreq r4, [r4, #-15] | |
| ; ARM-linux-NEXT: add r4, r4, #4 | |
| ; ARM-linux-NEXT: ldr r4, [r4] | |
| ; ARM-linux-NEXT: cmp r4, r5 | |
| ; ARM-linux-NEXT: blo .LBB0_2 | |
| ; ARM-linux: mov r4, #24 | |
| ; ARM-linux-NEXT: mov r5, #0 | |
| ; ARM-linux-NEXT: stmdb sp!, {lr} | |
| ; ARM-linux-NEXT: bl __morestack | |
| ; ARM-linux-NEXT: ldm sp!, {lr} | |
| ; ARM-linux-NEXT: pop {r4, r5} | |
| ; ARM-linux-NEXT: mov pc, lr | |
| ; ARM-linux: pop {r4, r5} | |
| ; ARM-android: test_basic: | |
| ; ARM-android: push {r4, r5} | |
| ; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3 | |
| ; ARM-android-NEXT: mov r5, sp | |
| ; ARM-android-NEXT: cmp r4, #0 | |
| ; ARM-android-NEXT: mvneq r4, #61440 | |
| ; ARM-android-NEXT: ldreq r4, [r4, #-15] | |
| ; ARM-android-NEXT: add r4, r4, #252 | |
| ; ARM-android-NEXT: ldr r4, [r4] | |
| ; ARM-android-NEXT: cmp r4, r5 | |
| ; ARM-android-NEXT: blo .LBB0_2 | |
| ; ARM-android: mov r4, #24 | |
| ; ARM-android-NEXT: mov r5, #0 | |
| ; ARM-android-NEXT: stmdb sp!, {lr} | |
| ; ARM-android-NEXT: bl __morestack | |
| ; ARM-android-NEXT: ldm sp!, {lr} | |
| ; ARM-android-NEXT: pop {r4, r5} | |
| ; ARM-android-NEXT: mov pc, lr | |
| ; ARM-android: pop {r4, r5} | |
| } |
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