forked from OSchip/llvm-project
38 lines
953 B
ArmAsm
38 lines
953 B
ArmAsm
# REQUIRES: x86
|
|
## basic-block-sections tests.
|
|
## This simple test checks if redundant direct jumps are converted to
|
|
## implicit fallthrus when PC32 reloc is present. The jcc's must be converted
|
|
## to their inverted opcode, for instance jne to je and jmp must be deleted.
|
|
|
|
# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
|
|
# RUN: llvm-objdump -dr %t.o| FileCheck %s --check-prefix=RELOC
|
|
# RUN: ld.lld --optimize-bb-jumps %t.o -o %t.out
|
|
# RUN: llvm-objdump -d %t.out| FileCheck %s
|
|
|
|
# RELOC: jmp
|
|
# RELOC-NEXT: R_X86_64_PC32
|
|
|
|
# CHECK: <foo>:
|
|
# CHECK-NEXT: nopl (%rax)
|
|
# CHECK-NEXT: jne 0x{{[[:xdigit:]]+}} <r.BB.foo>
|
|
# CHECK-NOT: jmp
|
|
|
|
|
|
.section .text,"ax",@progbits
|
|
.type foo,@function
|
|
foo:
|
|
nopl (%rax)
|
|
je a.BB.foo
|
|
# Encode a jmp r.BB.foo insn using a PC32 reloc
|
|
.byte 0xe9
|
|
.long r.BB.foo - . - 4
|
|
|
|
# CHECK: <a.BB.foo>:
|
|
# CHECK-NEXT: nopl (%rax)
|
|
|
|
.section .text,"ax",@progbits,unique,3
|
|
a.BB.foo:
|
|
nopl (%rax)
|
|
r.BB.foo:
|
|
ret
|