0f76a35c5e
ARMv4 doesn't support the "BX" instruction, which has been introduced with ARMv4t. Adjust the call lowering and tail call implementation accordingly. Further changes are necessary to ensure that presence of the v4t feature is correctly set. Most importantly, the "generic" CPU for thumb-* triples should include ARMv4t, since thumb mode without thumb support would naturally be pointless. Add a couple of asserts to ensure thumb instructions are not emitted without CPU support. Differential Revision: https://reviews.llvm.org/D37030 llvm-svn: 311921
250 lines
6.9 KiB
LLVM
250 lines
6.9 KiB
LLVM
; RUN: llc < %s -mtriple=arm-linux-androideabi -mattr=+v4t -verify-machineinstrs | FileCheck %s -check-prefix=ARM-android
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; RUN: llc < %s -mtriple=arm-linux-unknown-gnueabi -mattr=+v4t -verify-machineinstrs | FileCheck %s -check-prefix=ARM-linux
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; We used to crash with filetype=obj
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; RUN: llc < %s -mtriple=arm-linux-androideabi -filetype=obj
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; RUN: llc < %s -mtriple=arm-linux-unknown-gnueabi -filetype=obj
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; Just to prevent the alloca from being optimized away
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declare void @dummy_use(i32*, i32)
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define void @test_basic() #0 {
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%mem = alloca i32, i32 10
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call void @dummy_use (i32* %mem, i32 10)
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ret void
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; ARM-linux: test_basic:
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; ARM-linux: push {r4, r5}
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; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3
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; ARM-linux-NEXT: mov r5, sp
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; ARM-linux-NEXT: ldr r4, [r4, #4]
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; ARM-linux-NEXT: cmp r4, r5
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; ARM-linux-NEXT: blo .LBB0_2
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; ARM-linux: mov r4, #48
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; ARM-linux-NEXT: mov r5, #0
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; ARM-linux-NEXT: stmdb sp!, {lr}
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; ARM-linux-NEXT: bl __morestack
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; ARM-linux-NEXT: ldm sp!, {lr}
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; ARM-linux-NEXT: pop {r4, r5}
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; ARM-linux-NEXT: bx lr
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; ARM-linux: pop {r4, r5}
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; ARM-android: test_basic:
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; ARM-android: push {r4, r5}
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; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3
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; ARM-android-NEXT: mov r5, sp
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; ARM-android-NEXT: ldr r4, [r4, #252]
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; ARM-android-NEXT: cmp r4, r5
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; ARM-android-NEXT: blo .LBB0_2
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; ARM-android: mov r4, #48
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; ARM-android-NEXT: mov r5, #0
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; ARM-android-NEXT: stmdb sp!, {lr}
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; ARM-android-NEXT: bl __morestack
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; ARM-android-NEXT: ldm sp!, {lr}
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; ARM-android-NEXT: pop {r4, r5}
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; ARM-android-NEXT: bx lr
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; ARM-android: pop {r4, r5}
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}
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define i32 @test_nested(i32 * nest %closure, i32 %other) #0 {
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%addend = load i32 , i32 * %closure
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%result = add i32 %other, %addend
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%mem = alloca i32, i32 10
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call void @dummy_use (i32* %mem, i32 10)
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ret i32 %result
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; ARM-linux: test_nested:
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; ARM-linux: push {r4, r5}
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; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3
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; ARM-linux-NEXT: mov r5, sp
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; ARM-linux-NEXT: ldr r4, [r4, #4]
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; ARM-linux-NEXT: cmp r4, r5
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; ARM-linux-NEXT: blo .LBB1_2
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; ARM-linux: mov r4, #56
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; ARM-linux-NEXT: mov r5, #0
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; ARM-linux-NEXT: stmdb sp!, {lr}
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; ARM-linux-NEXT: bl __morestack
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; ARM-linux-NEXT: ldm sp!, {lr}
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; ARM-linux-NEXT: pop {r4, r5}
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; ARM-linux-NEXT: bx lr
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; ARM-linux: pop {r4, r5}
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; ARM-android: test_nested:
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; ARM-android: push {r4, r5}
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; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3
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; ARM-android-NEXT: mov r5, sp
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; ARM-android-NEXT: ldr r4, [r4, #252]
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; ARM-android-NEXT: cmp r4, r5
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; ARM-android-NEXT: blo .LBB1_2
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; ARM-android: mov r4, #56
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; ARM-android-NEXT: mov r5, #0
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; ARM-android-NEXT: stmdb sp!, {lr}
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; ARM-android-NEXT: bl __morestack
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; ARM-android-NEXT: ldm sp!, {lr}
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; ARM-android-NEXT: pop {r4, r5}
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; ARM-android-NEXT: bx lr
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; ARM-android: pop {r4, r5}
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}
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define void @test_large() #0 {
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%mem = alloca i32, i32 10000
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call void @dummy_use (i32* %mem, i32 0)
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ret void
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; ARM-linux: test_large:
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; ARM-linux: push {r4, r5}
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; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3
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; ARM-linux-NEXT: sub r5, sp, #40192
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; ARM-linux-NEXT: ldr r4, [r4, #4]
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; ARM-linux-NEXT: cmp r4, r5
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; ARM-linux-NEXT: blo .LBB2_2
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; ARM-linux: mov r4, #40192
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; ARM-linux-NEXT: mov r5, #0
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; ARM-linux-NEXT: stmdb sp!, {lr}
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; ARM-linux-NEXT: bl __morestack
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; ARM-linux-NEXT: ldm sp!, {lr}
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; ARM-linux-NEXT: pop {r4, r5}
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; ARM-linux-NEXT: bx lr
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; ARM-linux: pop {r4, r5}
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; ARM-android: test_large:
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; ARM-android: push {r4, r5}
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; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3
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; ARM-android-NEXT: sub r5, sp, #40192
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; ARM-android-NEXT: ldr r4, [r4, #252]
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; ARM-android-NEXT: cmp r4, r5
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; ARM-android-NEXT: blo .LBB2_2
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; ARM-android: mov r4, #40192
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; ARM-android-NEXT: mov r5, #0
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; ARM-android-NEXT: stmdb sp!, {lr}
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; ARM-android-NEXT: bl __morestack
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; ARM-android-NEXT: ldm sp!, {lr}
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; ARM-android-NEXT: pop {r4, r5}
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; ARM-android-NEXT: bx lr
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; ARM-android: pop {r4, r5}
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}
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define fastcc void @test_fastcc() #0 {
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%mem = alloca i32, i32 10
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call void @dummy_use (i32* %mem, i32 10)
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ret void
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; ARM-linux: test_fastcc:
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; ARM-linux: push {r4, r5}
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; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3
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; ARM-linux-NEXT: mov r5, sp
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; ARM-linux-NEXT: ldr r4, [r4, #4]
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; ARM-linux-NEXT: cmp r4, r5
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; ARM-linux-NEXT: blo .LBB3_2
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; ARM-linux: mov r4, #48
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; ARM-linux-NEXT: mov r5, #0
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; ARM-linux-NEXT: stmdb sp!, {lr}
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; ARM-linux-NEXT: bl __morestack
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; ARM-linux-NEXT: ldm sp!, {lr}
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; ARM-linux-NEXT: pop {r4, r5}
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; ARM-linux-NEXT: bx lr
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; ARM-linux: pop {r4, r5}
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; ARM-android: test_fastcc:
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; ARM-android: push {r4, r5}
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; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3
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; ARM-android-NEXT: mov r5, sp
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; ARM-android-NEXT: ldr r4, [r4, #252]
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; ARM-android-NEXT: cmp r4, r5
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; ARM-android-NEXT: blo .LBB3_2
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; ARM-android: mov r4, #48
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; ARM-android-NEXT: mov r5, #0
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; ARM-android-NEXT: stmdb sp!, {lr}
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; ARM-android-NEXT: bl __morestack
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; ARM-android-NEXT: ldm sp!, {lr}
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; ARM-android-NEXT: pop {r4, r5}
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; ARM-android-NEXT: bx lr
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; ARM-android: pop {r4, r5}
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}
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define fastcc void @test_fastcc_large() #0 {
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%mem = alloca i32, i32 10000
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call void @dummy_use (i32* %mem, i32 0)
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ret void
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; ARM-linux: test_fastcc_large:
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; ARM-linux: push {r4, r5}
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; ARM-linux-NEXT: mrc p15, #0, r4, c13, c0, #3
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; ARM-linux-NEXT: sub r5, sp, #40192
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; ARM-linux-NEXT: ldr r4, [r4, #4]
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; ARM-linux-NEXT: cmp r4, r5
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; ARM-linux-NEXT: blo .LBB4_2
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; ARM-linux: mov r4, #40192
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; ARM-linux-NEXT: mov r5, #0
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; ARM-linux-NEXT: stmdb sp!, {lr}
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; ARM-linux-NEXT: bl __morestack
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; ARM-linux-NEXT: ldm sp!, {lr}
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; ARM-linux-NEXT: pop {r4, r5}
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; ARM-linux-NEXT: bx lr
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; ARM-linux: pop {r4, r5}
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; ARM-android: test_fastcc_large:
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; ARM-android: push {r4, r5}
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; ARM-android-NEXT: mrc p15, #0, r4, c13, c0, #3
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; ARM-android-NEXT: sub r5, sp, #40192
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; ARM-android-NEXT: ldr r4, [r4, #252]
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; ARM-android-NEXT: cmp r4, r5
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; ARM-android-NEXT: blo .LBB4_2
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; ARM-android: mov r4, #40192
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; ARM-android-NEXT: mov r5, #0
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; ARM-android-NEXT: stmdb sp!, {lr}
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; ARM-android-NEXT: bl __morestack
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; ARM-android-NEXT: ldm sp!, {lr}
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; ARM-android-NEXT: pop {r4, r5}
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; ARM-android-NEXT: bx lr
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; ARM-android: pop {r4, r5}
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}
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define void @test_nostack() #0 {
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ret void
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; ARM-linux-LABEL: test_nostack:
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; ARM-linux-NOT: bl __morestack
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; ARM-android-LABEL: test_nostack:
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; ARM-android-NOT: bl __morestack
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}
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attributes #0 = { "split-stack" }
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