icf-keep-unique.s
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# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
# RUN: ld.lld %t -o %t2 --icf=all --print-icf-sections | FileCheck %s
# RUN: ld.lld %t -o %t2 --keep-unique f2 --keep-unique f4 --keep-unique f5 --icf=all --print-icf-sections 2>&1 | FileCheck %s -check-prefix=CHECK-KEEP
// Base case, expect only .text.f1 to be kept
// CHECK: selected section {{.*}}:(.text.f1)
// CHECK-NEXT: removing identical section {{.*}}:(.text.f2)
// CHECK-NEXT: removing identical section {{.*}}:(.text.f3)
// CHECK-NEXT: removing identical section {{.*}}:(.text.f4)
// CHECK-NEXT: removing identical section {{.*}}:(.text.f5)
// With --keep-unique f2, f4 and f5 we expect only f3 and f5 to be removed.
// f5 is not matched by --keep-unique as it is a local symbol.
// CHECK-KEEP: warning: could not find symbol f5 to keep unique
// CHECK-KEEP: selected section {{.*}}:(.text.f1)
// CHECK-KEEP-NEXT: removing identical section {{.*}}:(.text.f3)
// CHECK-KEEP-NEXT: removing identical section {{.*}}:(.text.f5)
.globl _start, f1, f2, f3, f4
_start:
ret
.section .text.f1, "ax"
f1:
nop
.section .text.f2, "ax"
f2:
nop
.section .text.f3, "ax"
f3:
nop
.section .text.f4, "ax"
f4:
nop
# f5 is local, not found by --keep-unique f5
.section .text.f5, "ax"
f5:
nop