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riscv-relax-call.s
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riscv-relax-call.s
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# REQUIRES: riscv
## Relax R_RISCV_CALL and R_RISCV_CALL_PLT.
# RUN: rm -rf %t && split-file %s %t && cd %t
## Without RVC
# RUN: llvm-mc -filetype=obj -triple=riscv32 -mattr=+relax a.s -o a.32.o
# RUN: llvm-mc -filetype=obj -triple=riscv32 -mattr=+relax b.s -o b.32.o
# RUN: ld.lld -shared -soname=b.so b.32.o -o b.32.so
# RUN: ld.lld -T lds a.32.o b.32.so -o 32
# RUN: llvm-objdump -td --no-show-raw-insn -M no-aliases 32 | FileCheck %s --check-prefix=NORVC
# RUN: llvm-mc -filetype=obj -triple=riscv64 -mattr=+relax a.s -o a.64.o
# RUN: llvm-mc -filetype=obj -triple=riscv64 -mattr=+relax b.s -o b.64.o
# RUN: ld.lld -shared -soname=b.so b.64.o -o b.64.so
# RUN: ld.lld -T lds a.64.o b.64.so -o 64
# RUN: llvm-objdump -td --no-show-raw-insn -M no-aliases 64 | FileCheck %s --check-prefix=NORVC
## RVC
# RUN: llvm-mc -filetype=obj -triple=riscv32 -mattr=+c,+relax a.s -o a.32c.o
# RUN: llvm-mc -filetype=obj -triple=riscv32 -mattr=+c,+relax b.s -o b.32c.o
# RUN: ld.lld -shared -soname=b.so b.32c.o -o b.32c.so
# RUN: ld.lld -T lds a.32c.o b.32c.so -o 32c
# RUN: llvm-objdump -td --no-show-raw-insn -M no-aliases 32c | FileCheck %s --check-prefixes=RVC,RVC32
# RUN: llvm-mc -filetype=obj -triple=riscv64 -mattr=+c,+relax a.s -o a.64c.o
# RUN: llvm-mc -filetype=obj -triple=riscv64 -mattr=+c,+relax b.s -o b.64c.o
# RUN: ld.lld -shared -soname=b.so b.64c.o -o b.64c.so
# RUN: ld.lld -T lds a.64c.o b.64c.so -o 64c
# RUN: llvm-objdump -td --no-show-raw-insn -M no-aliases 64c | FileCheck %s --check-prefixes=RVC,RVC64
## --no-relax disables relaxation.
# RUN: ld.lld -T lds a.64.o b.64.so --no-relax -o 64.norelax
# RUN: llvm-objdump -td --no-show-raw-insn -M no-aliases 64.norelax | FileCheck %s --check-prefixes=NORELAX
# NORVC: 00010000 g .text {{0*}}0000001c _start
# NORVC: 0001001c g .text {{0*}}00000000 _start_end
# NORVC: 00010808 g .mid {{0*}}00000000 mid_end
# NORVC: 00110016 g .high {{0*}}00000000 high_end
# NORVC-LABEL: <_start>:
# NORVC-NEXT: 10000: jal zero, {{.*}} <a>
# NORVC-NEXT: jal zero, {{.*}} <a>
# NORVC-NEXT: addi zero, zero, 0x0
# NORVC-NEXT: addi zero, zero, 0x0
# NORVC-NEXT: 10010: jal ra, {{.*}} <a>
# NORVC-NEXT: jal ra, 0x10420
# NORVC-EMPTY:
# NORVC-LABEL: <.mid>:
# NORVC-NEXT: 10800: jal ra, {{.*}} <_start>
# NORVC-NEXT: jal ra, {{.*}} <_start>
# NORVC-EMPTY:
# NORVC-LABEL: <.mid2>:
# NORVC-NEXT: 1080c: jal ra, {{.*}} <_start>
# NORVC-EMPTY:
# NORVC-LABEL: <.high>:
# NORVC-NEXT: 110006: auipc ra, 0xfff00
# NORVC-NEXT: jalr ra, -0x6(ra)
# NORVC-NEXT: auipc ra, 0xfff00
# NORVC-NEXT: jalr ra, -0xe(ra)
# NORVC-EMPTY:
# RVC32: 00010000 g .text 00000016 _start
# RVC32: 00010016 g .text 00000000 _start_end
# RVC32: 00010806 g .mid 00000000 mid_end
# RVC32: 0011000c g .high 00000000 high_end
# RVC64: 0000000000010000 g .text 000000000000001a _start
# RVC64: 000000000001001a g .text 0000000000000000 _start_end
# RVC64: 0000000000010808 g .mid 0000000000000000 mid_end
# RVC64: 0000000000110014 g .high 0000000000000000 high_end
# RVC-LABEL: <_start>:
# RVC-NEXT: 10000: c.j {{.*}} <a>
# RVC-NEXT: c.j {{.*}} <a>
# RVC-NEXT: addi zero, zero, 0x0
# RVC-NEXT: addi zero, zero, 0x0
# RVC-NEXT: addi zero, zero, 0x0
# RVC32-NEXT: 10010: c.jal {{.*}} <a>
# RVC32-NEXT: c.jal 0x10420
# RVC64-NEXT: 10010: jal ra, {{.*}} <a>
# RVC64-NEXT: jal ra, 0x10420
# RVC-EMPTY:
# RVC-NEXT: <a>:
# RVC-NEXT: c.jr ra
# RVC-EMPTY:
# RVC-LABEL: <.mid>:
# RVC32-NEXT: 10800: c.jal {{.*}} <_start>
# RVC64-NEXT: 10800: jal ra, {{.*}} <_start>
# RVC-NEXT: jal ra, {{.*}} <_start>
# RVC-EMPTY:
# RVC-LABEL: <.mid2>:
# RVC32-NEXT: 1080a: jal ra, {{.*}} <_start>
# RVC64-NEXT: 1080c: jal ra, {{.*}} <_start>
# RVC-EMPTY:
# RVC-LABEL: <.high>:
# RVC32-NEXT: 110000: jal ra, 0x10000 <_start>
# RVC32-NEXT: auipc ra, 0xfff00
# RVC32-NEXT: jalr ra, -0x4(ra)
# RVC64-NEXT: 110004: auipc ra, 0xfff00
# RVC64-NEXT: jalr ra, -0x4(ra)
# RVC64-NEXT: auipc ra, 0xfff00
# RVC64-NEXT: jalr ra, -0xc(ra)
# RVC-EMPTY:
# NORELAX-LABEL: <_start>:
# NORELAX-NEXT: 10000: auipc t1, 0x0
# NORELAX-NEXT: jalr zero, 0x20(t1)
# NORELAX-NEXT: auipc t0, 0x0
# NORELAX-NEXT: jalr zero, 0x18(t0)
# NORELAX-NEXT: 10010: auipc ra, 0x0
# NORELAX-NEXT: jalr ra, 0x10(ra)
# NORELAX-NEXT: auipc ra, 0x0
# NORELAX-NEXT: jalr ra, 0x408(ra)
# NORELAX-EMPTY:
#--- a.s
.global _start, _start_end
_start:
tail a@plt
jump a, t0
.balign 16
call a # rv32c: c.jal; rv64c: jal
call bar # PLT call can be relaxed. rv32c: c.jal; rv64c: jal
a:
ret
.size _start, . - _start
_start_end:
.section .mid,"ax",@progbits
call _start@plt # rv32c: c.jal; rv64c: jal
call _start@plt
.section .mid2,"ax",@progbits
call _start@plt
.section .high,"ax",@progbits
call _start@plt # relaxable for %t/32c
call _start@plt # not relaxed
#--- b.s
.globl bar
bar:
ret
#--- lds
SECTIONS {
.text 0x10000 : { *(.text) }
.plt 0x10400 : { *(.plt) }
.mid 0x10800 : { *(.mid); mid_end = .; }
.mid2 mid_end+4 : { *(.mid2) }
# 22 is the size of _start in %t/32c (RVC32).
.high 0x110000+(_start_end-_start)-22 : { *(.high); high_end = .; }
}