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| # REQUIRES: ppc
# RUN: llvm-mc -filetype=obj -triple=powerpc64le-unknown-linux %s -o %t1.o
# RUN: llvm-mc -filetype=obj -triple=powerpc64le-unknown-linux %p/Inputs/ppc64-no-split-stack.s -o %t2.o
# RUN: ld.lld --defsym __morestack=0x10010000 %t1.o %t2.o -o %t
# RUN: llvm-objdump -d %t | FileCheck %s
# RUN: llvm-mc -filetype=obj -triple=powerpc64-unknown-linux %s -o %t1.o
# RUN: llvm-mc -filetype=obj -triple=powerpc64-unknown-linux %p/Inputs/ppc64-no-split-stack.s -o %t2.o
# RUN: ld.lld --defsym __morestack=0x10010000 %t1.o %t2.o -o %t
# RUN: llvm-objdump -d %t | FileCheck %s
.abiversion 2
.section ".text"
# A caller with a stack that is small enough that the addis instruction
# from the split-stack prologue is unneeded, and after the prologue adjustment
# the stack size still fits whithin 16 bits.
.p2align 2
.global caller_small_stack
.type caller_small_stack, @function
caller_small_stack:
.Lcss_gep:
addis 2, 12, .TOC.-.Lcss_gep@ha
addi 2, 2, .TOC.-.Lcss_gep@l
.localentry caller_small_stack, .-caller_small_stack
ld 0, -0x7040(13)
addi 12, 1, -32
nop
cmpld 7, 12, 0
blt- 7, .Lcss_alloc_more
.Lcss_body:
mflr 0
std 0, 16(1)
stdu 1, -32(1)
bl nss_callee
addi 1, 1, 32
ld 0, 16(1)
mtlr 0
blr
.Lcss_alloc_more:
mflr 0
std 0, 16(1)
bl __morestack
ld 0, 16(1)
mtlr 0
blr
b .Lcss_body
.size caller_small_stack, .-caller_small_stack
# CHECK-LABEL: caller_small_stack
# CHECK: ld 0, -28736(13)
# CHECK-NEXT: addi 12, 1, -16416
# CHECK-NEXT: nop
# CHECK-NEXT: cmpld 7, 12, 0
# CHECK-NEXT: bt- 28, .+36
# A caller that has a stack size that fits whithin 16 bits, but the adjusted
# stack size after prologue adjustment now overflows 16 bits needing both addis
# and addi instructions.
.p2align 2
.global caller_med_stack
.type caller_med_stack, @function
caller_med_stack:
.Lcms_gep:
addis 2, 12, .TOC.-.Lcms_gep@ha
addi 12, 12, .TOC.-.Lcms_gep@l
.localentry caller_med_stack, .-caller_med_stack
ld 0, -0x7040(13)
addi 12, 1, -32764
nop
cmpld 7, 12, 0
blt- 7, .Lcms_alloc_more
.Lcms_body:
mflr 0
std 0, 16(1)
stdu 1, -32764(1)
bl nss_callee
addi 1, 1, 32764
ld 0, 16(1)
mtlr 0
blr
.Lcms_alloc_more:
mflr 0
std 0, 16(1)
bl __morestack
ld 0, 16(1)
mtlr 0
blr
b .Lcms_body
.size caller_med_stack, .-caller_med_stack
# A caller with a large enough stack frame that both the addis and
# addi instructions are used in the split-stack prologue.
.p2align 2
.global caller_large_stack
.type caller_large_stack, @function
caller_large_stack:
.Lcls_gep:
addis 2, 12, .TOC.-.Lcls_gep@ha
addi 12, 12, .TOC.-.Lcls_gep@l
.localentry caller_large_stack, .-caller_large_stack
ld 0, -0x7040(13)
addis 12, 1, -1
addi 12, 12, -32
cmpld 7, 12, 0
blt- 7, .Lcls_alloc_more
.Lcls_body:
mflr 0
std 0, 16(1)
lis 0, -1
addi 0, 0, -32
stdux 1, 0, 1
bl nss_callee
ld 1, 0(1)
ld 0, 16(1)
mtlr 0
blr
.Lcls_alloc_more:
mflr 0
std 0, 16(1)
bl __morestack
ld 0, 16(1)
mtlr 0
blr
b .Lcls_body
.size caller_large_stack, .-caller_large_stack
# CHECK-LABEL: caller_large_stack
# CHECK: ld 0, -28736(13)
# CHECK-NEXT: addis 12, 1, -1
# CHECK-NEXT: addi 12, 12, -16416
# CHECK-NEXT: cmpld 7, 12, 0
# CHECK-NEXT: bt- 28, .+44
# A caller with a stack size that is larger then 16 bits, but aligned such that
# the addi instruction is unneeded.
.p2align 2
.global caller_large_aligned_stack
.type caller_large_aligned_stack, @function
caller_large_aligned_stack:
.Lclas_gep:
addis 2, 12, .TOC.-.Lclas_gep@ha
addi 12, 12, .TOC.-.Lclas_gep@l
.localentry caller_large_aligned_stack, .-caller_large_aligned_stack
ld 0, -0x7040(13)
addis 12, 1, -2
nop
cmpld 7, 12, 0
blt- 7, .Lclas_alloc_more
.Lclas_body:
mflr 0
std 0, 16(1)
lis 0, -2
stdux 1, 0, 1
bl nss_callee
ld 1, 0(1)
ld 0, 16(1)
mtlr 0
blr
.Lclas_alloc_more:
mflr 0
std 0, 16(1)
bl __morestack
ld 0, 16(1)
mtlr 0
blr
b .Lclas_body
.size caller_large_aligned_stack, .-caller_large_aligned_stack
# CHECK-LABEL: caller_large_aligned_stack
# CHECK: ld 0, -28736(13)
# CHECK-NEXT: addis 12, 1, -2
# CHECK-NEXT: addi 12, 12, -16384
# CHECK-NEXT: cmpld 7, 12, 0
# CHECK-NEXT: bt- 28, .+40
# main only calls split-stack functions or __morestack so
# there should be no adjustment of its split-stack prologue.
.p2align 2
.global main
.type main, @function
main:
.Lmain_gep:
addis 2, 12,.TOC.-.Lmain_gep@ha
addi 2, 2,.TOC.-.Lmain_gep@l
.localentry main,.-main
ld 0, -0x7040(13)
addi 12,1,-32
nop
cmpld 7, 12,0
blt- 7, .Lmain_morestack
.Lmain_body:
mflr 0
std 0, 16(1)
stdu 1, -32(1)
bl caller_small_stack
nop
bl caller_med_stack
nop
bl caller_large_stack
nop
bl caller_large_aligned_stack
addi 1, 1, 32
ld 0, 16(1)
mtlr 0
blr
.Lmain_morestack:
mflr 0
std 0, 16(1)
bl __morestack
ld 0, 16(1)
mtlr 0
blr
b .Lmain_body
.size main,.-main
# CHECK-LABEL: main
# CHECK: ld 0, -28736(13)
# CHECK-NEXT: addi 12, 1, -32
# CHECK-NEXT: nop
# CHECK-NEXT: cmpld 7, 12, 0
.section .note.GNU-split-stack,"",@progbits
|