| ; RUN: llc < %s -mtriple=arm-linux-androideabi -mattr=+v4t -verify-machineinstrs | FileCheck %s -check-prefix=ARM-android |
| ; RUN: llc < %s -mtriple=arm-linux-unknown-gnueabi -mattr=+v4t -verify-machineinstrs | FileCheck %s -check-prefix=ARM-linux |
| |
| ; We used to crash with filetype=obj |
| ; RUN: llc < %s -mtriple=arm-linux-androideabi -filetype=obj |
| ; RUN: llc < %s -mtriple=arm-linux-unknown-gnueabi -filetype=obj |
| |
| |
| ; Just to prevent the alloca from being optimized away |
| declare void @dummy_use(i32*, i32) |
| |
| define void @test_basic() #0 { |
| %mem = alloca i32, i32 10 |
| call void @dummy_use (i32* %mem, i32 10) |
| ret void |
| |
| ; 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: ldr r4, [r4, #4] |
| ; ARM-linux-NEXT: cmp r4, r5 |
| ; ARM-linux-NEXT: blo .LBB0_2 |
| |
| ; ARM-linux: mov r4, #48 |
| ; 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: bx 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: ldr r4, [r4, #252] |
| ; ARM-android-NEXT: cmp r4, r5 |
| ; ARM-android-NEXT: blo .LBB0_2 |
| |
| ; ARM-android: mov r4, #48 |
| ; 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: bx lr |
| |
| ; ARM-android: pop {r4, r5} |
| |
| } |
| |
| define i32 @test_nested(i32 * nest %closure, i32 %other) #0 { |
| %addend = load i32 , i32 * %closure |
| %result = add i32 %other, %addend |
| %mem = alloca i32, i32 10 |
| call void @dummy_use (i32* %mem, i32 10) |
| ret i32 %result |
| |
| ; ARM-linux: test_nested: |
| |
| ; ARM-linux: push {r4, r5} |
| ; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3 |
| ; ARM-linux-NEXT: mov r5, sp |
| ; ARM-linux-NEXT: ldr r4, [r4, #4] |
| ; ARM-linux-NEXT: cmp r4, r5 |
| ; ARM-linux-NEXT: blo .LBB1_2 |
| |
| ; ARM-linux: mov r4, #56 |
| ; 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: bx lr |
| |
| ; ARM-linux: pop {r4, r5} |
| |
| ; ARM-android: test_nested: |
| |
| ; ARM-android: push {r4, r5} |
| ; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3 |
| ; ARM-android-NEXT: mov r5, sp |
| ; ARM-android-NEXT: ldr r4, [r4, #252] |
| ; ARM-android-NEXT: cmp r4, r5 |
| ; ARM-android-NEXT: blo .LBB1_2 |
| |
| ; ARM-android: mov r4, #56 |
| ; 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: bx lr |
| |
| ; ARM-android: pop {r4, r5} |
| |
| } |
| |
| define void @test_large() #0 { |
| %mem = alloca i32, i32 10000 |
| call void @dummy_use (i32* %mem, i32 0) |
| ret void |
| |
| ; ARM-linux: test_large: |
| |
| ; ARM-linux: push {r4, r5} |
| ; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3 |
| ; ARM-linux-NEXT: sub r5, sp, #40192 |
| ; ARM-linux-NEXT: ldr r4, [r4, #4] |
| ; ARM-linux-NEXT: cmp r4, r5 |
| ; ARM-linux-NEXT: blo .LBB2_2 |
| |
| ; ARM-linux: mov r4, #40192 |
| ; 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: bx lr |
| |
| ; ARM-linux: pop {r4, r5} |
| |
| ; ARM-android: test_large: |
| |
| ; ARM-android: push {r4, r5} |
| ; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3 |
| ; ARM-android-NEXT: sub r5, sp, #40192 |
| ; ARM-android-NEXT: ldr r4, [r4, #252] |
| ; ARM-android-NEXT: cmp r4, r5 |
| ; ARM-android-NEXT: blo .LBB2_2 |
| |
| ; ARM-android: mov r4, #40192 |
| ; 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: bx lr |
| |
| ; ARM-android: pop {r4, r5} |
| |
| } |
| |
| define fastcc void @test_fastcc() #0 { |
| %mem = alloca i32, i32 10 |
| call void @dummy_use (i32* %mem, i32 10) |
| ret void |
| |
| ; ARM-linux: test_fastcc: |
| |
| ; ARM-linux: push {r4, r5} |
| ; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3 |
| ; ARM-linux-NEXT: mov r5, sp |
| ; ARM-linux-NEXT: ldr r4, [r4, #4] |
| ; ARM-linux-NEXT: cmp r4, r5 |
| ; ARM-linux-NEXT: blo .LBB3_2 |
| |
| ; ARM-linux: mov r4, #48 |
| ; 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: bx lr |
| |
| ; ARM-linux: pop {r4, r5} |
| |
| ; ARM-android: test_fastcc: |
| |
| ; ARM-android: push {r4, r5} |
| ; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3 |
| ; ARM-android-NEXT: mov r5, sp |
| ; ARM-android-NEXT: ldr r4, [r4, #252] |
| ; ARM-android-NEXT: cmp r4, r5 |
| ; ARM-android-NEXT: blo .LBB3_2 |
| |
| ; ARM-android: mov r4, #48 |
| ; 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: bx lr |
| |
| ; ARM-android: pop {r4, r5} |
| |
| } |
| |
| define fastcc void @test_fastcc_large() #0 { |
| %mem = alloca i32, i32 10000 |
| call void @dummy_use (i32* %mem, i32 0) |
| ret void |
| |
| ; ARM-linux: test_fastcc_large: |
| |
| ; ARM-linux: push {r4, r5} |
| ; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3 |
| ; ARM-linux-NEXT: sub r5, sp, #40192 |
| ; ARM-linux-NEXT: ldr r4, [r4, #4] |
| ; ARM-linux-NEXT: cmp r4, r5 |
| ; ARM-linux-NEXT: blo .LBB4_2 |
| |
| ; ARM-linux: mov r4, #40192 |
| ; 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: bx lr |
| |
| ; ARM-linux: pop {r4, r5} |
| |
| ; ARM-android: test_fastcc_large: |
| |
| ; ARM-android: push {r4, r5} |
| ; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3 |
| ; ARM-android-NEXT: sub r5, sp, #40192 |
| ; ARM-android-NEXT: ldr r4, [r4, #252] |
| ; ARM-android-NEXT: cmp r4, r5 |
| ; ARM-android-NEXT: blo .LBB4_2 |
| |
| ; ARM-android: mov r4, #40192 |
| ; 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: bx lr |
| |
| ; ARM-android: pop {r4, r5} |
| |
| } |
| |
| define void @test_nostack() #0 { |
| ret void |
| |
| ; ARM-linux-LABEL: test_nostack: |
| ; ARM-linux-NOT: bl __morestack |
| |
| ; ARM-android-LABEL: test_nostack: |
| ; ARM-android-NOT: bl __morestack |
| } |
| |
| ; Test to make sure that a morestack call is generated if there is a |
| ; sibling call, even if the function in question has no stack frame |
| ; (PR37807). |
| |
| declare i32 @callee(i32) |
| |
| define i32 @test_sibling_call_empty_frame(i32 %x) #0 { |
| %call = tail call i32 @callee(i32 %x) #0 |
| ret i32 %call |
| |
| ; ARM-linux: test_sibling_call_empty_frame: |
| ; ARM-linux: bl __morestack |
| |
| ; ARM-android: test_sibling_call_empty_frame: |
| ; ARM-android: bl __morestack |
| |
| } |
| |
| attributes #0 = { "split-stack" } |
