derek.holloway
7502bf64a4
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85 lines
2.2 KiB
ArmAsm
85 lines
2.2 KiB
ArmAsm
# REQUIRES: x86
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# RUN: rm -rf %t*
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %s -o %t.o
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# RUN: %lld -lSystem --icf=all -o %t %t.o
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# RUN: llvm-objdump -d --syms %t | FileCheck %s
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## When ICF has fewer than 1 Ki functions to segregate into equivalence classes,
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## it uses a sequential algorithm to avoid the overhead of threading.
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## At 1 Ki functions or more, when threading begins to pay-off, ICF employs its
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## parallel segregation algorithm. Here we generate 4 Ki functions to exercise
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## the parallel algorithm. There are 4 unique function bodies, each replicated
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## 1 Ki times. The resulting folded program should retain one instance for each
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## of the four unique functions.
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## The symtab does not have a particular order. And even though we can expect
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## some partial order, it is not possible to express that in FileCheck syntax.
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## So just use -DAG
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# CHECK-LABEL: SYMBOL TABLE:
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# CHECK-DAG: [[#%x,G0:]] g F __TEXT,__text _g000000
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# CHECK-DAG: [[#%x,G0]] g F __TEXT,__text _g033333
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# CHECK-DAG: [[#%x,G1:]] g F __TEXT,__text _g100000
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# CHECK-DAG: [[#%x,G1]] g F __TEXT,__text _g133333
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# CHECK-DAG: [[#%x,G2:]] g F __TEXT,__text _g200000
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# CHECK-DAG: [[#%x,G2]] g F __TEXT,__text _g233333
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# CHECK-DAG: [[#%x,G3:]] g F __TEXT,__text _g300000
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# CHECK-DAG: [[#%x,G3]] g F __TEXT,__text _g333333
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## . . . many intervening _gXXXXXX symbols
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# CHECK-LABEL: Disassembly of section __TEXT,__text:
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# CHECK-DAG: [[#%x,G0]] <_g033333>:
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# CHECK-DAG: [[#%x,G1]] <_g133333>:
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# CHECK-DAG: [[#%x,G2]] <_g233333>:
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# CHECK-DAG: [[#%x,G3]] <_g333333>:
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# CHECK-NOT: [[#]] <_g{{.*}}>:
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.subsections_via_symbols
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.text
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.p2align 2
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.macro gen_4 c
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.globl _g0\c, _g1\c, _g2\c, _g3\c
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_g0\c:; movl $0, %eax; ret
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_g1\c:; movl $1, %eax; ret
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_g2\c:; movl $2, %eax; ret
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_g3\c:; movl $3, %eax; ret
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.endm
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.macro gen_16 c
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gen_4 0\c
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gen_4 1\c
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gen_4 2\c
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gen_4 3\c
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.endm
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.macro gen_64 c
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gen_16 0\c
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gen_16 1\c
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gen_16 2\c
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gen_16 3\c
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.endm
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.macro gen_256 c
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gen_64 0\c
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gen_64 1\c
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gen_64 2\c
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gen_64 3\c
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.endm
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.macro gen_1024 c
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gen_256 0\c
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gen_256 1\c
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gen_256 2\c
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gen_256 3\c
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.endm
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gen_1024 0
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gen_1024 1
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gen_1024 2
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gen_1024 3
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.globl _main
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_main:
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ret
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