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# REQUIRES: x86
## basic-block-sections tests.
## This simple test checks if redundant direct jumps are converted to
## implicit fallthrus. 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: ld.lld --optimize-bb-jumps %t.o -o %t.out
# RUN: llvm-objdump -d %t.out| FileCheck %s
# 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
jmp r.BB.foo
# CHECK: <a.BB.foo>:
# CHECK-NEXT: nopl (%rax)
# CHECK-NEXT: je 0x{{[[:xdigit:]]+}} <r.BB.foo>
# CHECK-NOT: jmp
.section .text,"ax",@progbits,unique,3
a.BB.foo:
nopl (%rax)
jne aa.BB.foo
jmp r.BB.foo
# CHECK: <aa.BB.foo>:
# CHECK-NEXT: nopl (%rax)
# CHECK-NEXT: jle 0x{{[[:xdigit:]]+}} <r.BB.foo>
# CHECK-NOT: jmp
#
.section .text,"ax",@progbits,unique,4
aa.BB.foo:
nopl (%rax)
jg aaa.BB.foo
jmp r.BB.foo
# CHECK: <aaa.BB.foo>:
# CHECK-NEXT: nopl (%rax)
# CHECK-NEXT: jl 0x{{[[:xdigit:]]+}} <r.BB.foo>
# CHECK-NOT: jmp
#
.section .text,"ax",@progbits,unique,5
aaa.BB.foo:
nopl (%rax)
jge aaaa.BB.foo
jmp r.BB.foo
# CHECK: <aaaa.BB.foo>:
# CHECK-NEXT: nopl (%rax)
# CHECK-NEXT: jae 0x{{[[:xdigit:]]+}} <r.BB.foo>
# CHECK-NOT: jmp
#
.section .text,"ax",@progbits,unique,6
aaaa.BB.foo:
nopl (%rax)
jb aaaaa.BB.foo
jmp r.BB.foo
# CHECK: <aaaaa.BB.foo>:
# CHECK-NEXT: nopl (%rax)
# CHECK-NEXT: ja 0x{{[[:xdigit:]]+}} <r.BB.foo>
# CHECK-NOT: jmp
#
.section .text,"ax",@progbits,unique,7
aaaaa.BB.foo:
nopl (%rax)
jbe aaaaaa.BB.foo
jmp r.BB.foo
# CHECK: <aaaaaa.BB.foo>:
# CHECK-NEXT: nopl (%rax)
# CHECK-NEXT: jge 0x{{[[:xdigit:]]+}} <r.BB.foo>
# CHECK-NOT: jmp
#
.section .text,"ax",@progbits,unique,8
aaaaaa.BB.foo:
nopl (%rax)
jl aaaaaaa.BB.foo
jmp r.BB.foo
# CHECK: <aaaaaaa.BB.foo>:
# CHECK-NEXT: nopl (%rax)
# CHECK-NEXT: jg 0x{{[[:xdigit:]]+}} <r.BB.foo>
# CHECK-NOT: jmp
#
.section .text,"ax",@progbits,unique,9
aaaaaaa.BB.foo:
nopl (%rax)
jle aaaaaaaa.BB.foo
jmp r.BB.foo
# CHECK: <aaaaaaaa.BB.foo>:
# CHECK-NEXT: nopl (%rax)
# CHECK-NEXT: jbe 0x{{[[:xdigit:]]+}} <r.BB.foo>
# CHECK-NOT: jmp
#
.section .text,"ax",@progbits,unique,10
aaaaaaaa.BB.foo:
nopl (%rax)
ja aaaaaaaaa.BB.foo
jmp r.BB.foo
# CHECK: <aaaaaaaaa.BB.foo>:
# CHECK-NEXT: nopl (%rax)
# CHECK-NEXT: jb 0x{{[[:xdigit:]]+}} <r.BB.foo>
# CHECK-NOT: jmp
#
.section .text,"ax",@progbits,unique,11
aaaaaaaaa.BB.foo:
nopl (%rax)
jae aaaaaaaaaa.BB.foo
jmp r.BB.foo
.section .text,"ax",@progbits,unique,20
aaaaaaaaaa.BB.foo:
nopl (%rax)
r.BB.foo:
ret
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