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TheRock/compiler/amd-llvm/llvm/test/MC/X86/align-branch-convergence.s
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

74 lines
1.5 KiB
ArmAsm

# REQUIRES: asserts
## Verify that boundary alignment converges in O(1) inner iterations,
## not O(N) where N is the number of BoundaryAlign fragments.
## The fused relaxation+layout pass gives each BoundaryAlign fragment fresh
## upstream offsets, so all padding is computed correctly in a single pass.
# RUN: llvm-mc -filetype=obj -triple=x86_64 --stats \
# RUN: --x86-align-branch-boundary=32 --x86-align-branch=jcc+call %s \
# RUN: -o %t 2>&1 | FileCheck %s --check-prefix=STATS
# STATS: 3 assembler - Number of assembler layout and relaxation steps
# RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck %s
# CHECK: 0: testl
# CHECK: 2: je
# CHECK: 8: callq
# CHECK: 1c: nop
# CHECK-NEXT: 20: callq
# CHECK: 34: testl
# CHECK-NEXT: 36: jne
# CHECK: 65: testl
# CHECK: 67: je
# CHECK: a0: jne
# CHECK: d1: je
# CHECK: 100: callq
# CHECK: 105: testl
# CHECK-NEXT: 107: jne
# CHECK: 13b: je
# CHECK: 160: callq
# CHECK: 16a: testl
# CHECK-NEXT: 16c: jne
# CHECK: 172: retq
.p2align 5
func:
testl %eax, %eax
je .Lend
.rept 8
callq foo
.endr
testl %ecx, %ecx
jne func
.rept 8
callq foo
.endr
testl %edx, %edx
je .Lend
.rept 8
callq foo
.endr
testl %esi, %esi
jne func
.rept 8
callq foo
.endr
testl %edi, %edi
je .Lend
.rept 8
callq foo
.endr
testl %ebp, %ebp
jne func
.rept 8
callq foo
.endr
testl %eax, %eax
je .Lend
.rept 8
callq foo
.endr
testl %ecx, %ecx
jne func
.Lend:
retq