forked from OSchip/llvm-project
225 lines
5.4 KiB
ArmAsm
225 lines
5.4 KiB
ArmAsm
# REQUIRES: ppc
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# RUN: llvm-mc -filetype=obj -triple=powerpc64le-unknown-linux %s -o %t1.o
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# RUN: llvm-mc -filetype=obj -triple=powerpc64le-unknown-linux %p/Inputs/ppc64-no-split-stack.s -o %t2.o
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# RUN: ld.lld --defsym __morestack=0x10010000 %t1.o %t2.o -o %t
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# RUN: llvm-objdump -d %t | FileCheck %s
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# RUN: llvm-mc -filetype=obj -triple=powerpc64-unknown-linux %s -o %t1.o
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# RUN: llvm-mc -filetype=obj -triple=powerpc64-unknown-linux %p/Inputs/ppc64-no-split-stack.s -o %t2.o
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# RUN: ld.lld --defsym __morestack=0x10010000 %t1.o %t2.o -o %t
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# RUN: llvm-objdump -d %t | FileCheck %s
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.abiversion 2
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.section ".text"
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# A caller with a stack that is small enough that the addis instruction
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# from the split-stack prologue is unneeded, and after the prologue adjustment
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# the stack size still fits within 16 bits.
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.p2align 2
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.global caller_small_stack
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.type caller_small_stack, @function
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caller_small_stack:
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.Lcss_gep:
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addis 2, 12, .TOC.-.Lcss_gep@ha
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addi 2, 2, .TOC.-.Lcss_gep@l
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.localentry caller_small_stack, .-caller_small_stack
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ld 0, -0x7040(13)
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addi 12, 1, -32
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nop
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cmpld 7, 12, 0
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blt- 7, .Lcss_alloc_more
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.Lcss_body:
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mflr 0
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std 0, 16(1)
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stdu 1, -32(1)
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bl nss_callee
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addi 1, 1, 32
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ld 0, 16(1)
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mtlr 0
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blr
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.Lcss_alloc_more:
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mflr 0
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std 0, 16(1)
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bl __morestack
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ld 0, 16(1)
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mtlr 0
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blr
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b .Lcss_body
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.size caller_small_stack, .-caller_small_stack
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# CHECK-LABEL: caller_small_stack
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# CHECK: ld 0, -28736(13)
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# CHECK-NEXT: addi 12, 1, -16416
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# CHECK-NEXT: nop
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# CHECK-NEXT: cmpld 7, 12, 0
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# CHECK-NEXT: bt- 28, 0x10010204
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# A caller that has a stack size that fits within 16 bits, but the adjusted
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# stack size after prologue adjustment now overflows 16 bits needing both addis
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# and addi instructions.
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.p2align 2
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.global caller_med_stack
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.type caller_med_stack, @function
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caller_med_stack:
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.Lcms_gep:
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addis 2, 12, .TOC.-.Lcms_gep@ha
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addi 12, 12, .TOC.-.Lcms_gep@l
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.localentry caller_med_stack, .-caller_med_stack
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ld 0, -0x7040(13)
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addi 12, 1, -32764
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nop
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cmpld 7, 12, 0
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blt- 7, .Lcms_alloc_more
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.Lcms_body:
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mflr 0
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std 0, 16(1)
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stdu 1, -32764(1)
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bl nss_callee
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addi 1, 1, 32764
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ld 0, 16(1)
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mtlr 0
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blr
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.Lcms_alloc_more:
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mflr 0
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std 0, 16(1)
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bl __morestack
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ld 0, 16(1)
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mtlr 0
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blr
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b .Lcms_body
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.size caller_med_stack, .-caller_med_stack
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# A caller with a large enough stack frame that both the addis and
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# addi instructions are used in the split-stack prologue.
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.p2align 2
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.global caller_large_stack
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.type caller_large_stack, @function
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caller_large_stack:
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.Lcls_gep:
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addis 2, 12, .TOC.-.Lcls_gep@ha
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addi 12, 12, .TOC.-.Lcls_gep@l
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.localentry caller_large_stack, .-caller_large_stack
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ld 0, -0x7040(13)
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addis 12, 1, -1
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addi 12, 12, -32
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cmpld 7, 12, 0
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blt- 7, .Lcls_alloc_more
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.Lcls_body:
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mflr 0
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std 0, 16(1)
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lis 0, -1
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addi 0, 0, -32
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stdux 1, 0, 1
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bl nss_callee
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ld 1, 0(1)
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ld 0, 16(1)
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mtlr 0
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blr
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.Lcls_alloc_more:
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mflr 0
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std 0, 16(1)
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bl __morestack
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ld 0, 16(1)
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mtlr 0
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blr
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b .Lcls_body
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.size caller_large_stack, .-caller_large_stack
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# CHECK-LABEL: caller_large_stack
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# CHECK: ld 0, -28736(13)
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# CHECK-NEXT: addis 12, 1, -1
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# CHECK-NEXT: addi 12, 12, -16416
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# CHECK-NEXT: cmpld 7, 12, 0
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# CHECK-NEXT: bt- 28, 0x100102bc
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# A caller with a stack size that is larger then 16 bits, but aligned such that
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# the addi instruction is unneeded.
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.p2align 2
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.global caller_large_aligned_stack
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.type caller_large_aligned_stack, @function
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caller_large_aligned_stack:
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.Lclas_gep:
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addis 2, 12, .TOC.-.Lclas_gep@ha
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addi 12, 12, .TOC.-.Lclas_gep@l
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.localentry caller_large_aligned_stack, .-caller_large_aligned_stack
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ld 0, -0x7040(13)
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addis 12, 1, -2
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nop
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cmpld 7, 12, 0
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blt- 7, .Lclas_alloc_more
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.Lclas_body:
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mflr 0
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std 0, 16(1)
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lis 0, -2
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stdux 1, 0, 1
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bl nss_callee
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ld 1, 0(1)
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ld 0, 16(1)
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mtlr 0
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blr
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.Lclas_alloc_more:
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mflr 0
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std 0, 16(1)
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bl __morestack
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ld 0, 16(1)
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mtlr 0
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blr
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b .Lclas_body
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.size caller_large_aligned_stack, .-caller_large_aligned_stack
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# CHECK-LABEL: caller_large_aligned_stack
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# CHECK: ld 0, -28736(13)
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# CHECK-NEXT: addis 12, 1, -2
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# CHECK-NEXT: addi 12, 12, -16384
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# CHECK-NEXT: cmpld 7, 12, 0
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# CHECK-NEXT: bt- 28, 0x10010318
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# main only calls split-stack functions or __morestack so
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# there should be no adjustment of its split-stack prologue.
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.p2align 2
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.global main
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.type main, @function
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main:
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.Lmain_gep:
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addis 2, 12,.TOC.-.Lmain_gep@ha
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addi 2, 2,.TOC.-.Lmain_gep@l
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.localentry main,.-main
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ld 0, -0x7040(13)
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addi 12,1,-32
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nop
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cmpld 7, 12,0
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blt- 7, .Lmain_morestack
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.Lmain_body:
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mflr 0
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std 0, 16(1)
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stdu 1, -32(1)
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bl caller_small_stack
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nop
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bl caller_med_stack
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nop
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bl caller_large_stack
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nop
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bl caller_large_aligned_stack
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addi 1, 1, 32
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ld 0, 16(1)
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mtlr 0
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blr
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.Lmain_morestack:
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mflr 0
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std 0, 16(1)
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bl __morestack
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ld 0, 16(1)
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mtlr 0
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blr
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b .Lmain_body
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.size main,.-main
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# CHECK-LABEL: main
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# CHECK: ld 0, -28736(13)
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# CHECK-NEXT: addi 12, 1, -32
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# CHECK-NEXT: nop
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# CHECK-NEXT: cmpld 7, 12, 0
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.section .note.GNU-split-stack,"",@progbits
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