| # REQUIRES: x86 |
| # RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o |
| # RUN: echo 'SECTIONS { .text : { *(.text*) } }' > %t1.script |
| |
| ## Sections within the same output section can be freely folded. |
| # RUN: ld.lld %t.o --script %t1.script --icf=all --print-icf-sections -o %t | FileCheck --check-prefix=ICF1 %s |
| # RUN: llvm-readelf -S %t | FileCheck --check-prefix=SEC1 %s --implicit-check-not=.text |
| |
| # ICF1: selected section {{.*}}.o:(.text.foo0) |
| # ICF1-NEXT: removing identical section {{.*}}.o:(.text.foo1) |
| # ICF1-NEXT: removing identical section {{.*}}.o:(.text.bar0) |
| # ICF1-NEXT: removing identical section {{.*}}.o:(.text.bar1) |
| |
| # SEC1: .text PROGBITS 0000000000000000 001000 000001 |
| |
| ## Sections with different output sections cannot be folded. Without the |
| ## linker script, .text.foo* and .text.bar* go to the same output section |
| ## .text and they will be folded. |
| # RUN: echo 'SECTIONS { .text.foo : {*(.text.foo*)} .text.bar : {*(.text.bar*)} }' > %t2.script |
| # RUN: ld.lld %t.o --script %t2.script --icf=all --print-icf-sections -o %t | FileCheck --check-prefix=ICF2 %s |
| # RUN: llvm-readelf -S %t | FileCheck --check-prefix=SEC2 %s |
| |
| # ICF2: selected section {{.*}}.o:(.text.foo0) |
| # ICF2-NEXT: removing identical section {{.*}}.o:(.text.foo1) |
| # ICF2-NEXT: selected section {{.*}}.o:(.text.bar0) |
| # ICF2-NEXT: removing identical section {{.*}}.o:(.text.bar1) |
| |
| # SEC2: .text.foo PROGBITS 0000000000000000 001000 000001 |
| # SEC2-NEXT: .text.bar PROGBITS 0000000000000001 001001 000001 |
| |
| ## .text.bar* are orphans that get assigned to .text. |
| # RUN: echo 'SECTIONS { .text.foo : {*(.text.foo*)} }' > %t3.script |
| # RUN: ld.lld %t.o --script %t3.script --icf=all --print-icf-sections -o %t | FileCheck --check-prefix=ICF2 %s |
| # RUN: llvm-readelf -S %t | FileCheck --check-prefix=SEC3 %s |
| |
| # SEC3: .text.foo PROGBITS 0000000000000000 001000 000001 |
| # SEC3-NEXT: .text PROGBITS 0000000000000004 001004 000001 |
| |
| .section .text.foo0,"ax" |
| ret |
| .section .text.foo1,"ax" |
| ret |
| .section .text.bar0,"ax" |
| ret |
| .section .text.bar1,"ax" |
| ret |