[lld] [lld][LoongArch] Relax R_LARCH_PCALA_HI20 and R_LARCH_PCALA_LO12 (PR #112696)

[via llvm-commits]

================
@@ -5,42 +5,65 @@
 # RUN: llvm-mc --filetype=obj --triple=loongarch64 --mattr=+relax %s -o %t.64.o
 # RUN: ld.lld -Ttext=0x10000 --emit-relocs %t.32.o -o %t.32
 # RUN: ld.lld -Ttext=0x10000 --emit-relocs %t.64.o -o %t.64
-# RUN: llvm-objdump -dr %t.32 | FileCheck %s
-# RUN: llvm-objdump -dr %t.64 | FileCheck %s
+# RUN: llvm-objdump -dr %t.32 | FileCheck %s --check-prefix=LA32RELOC
+# RUN: llvm-objdump -dr %t.64 | FileCheck %s --check-prefix=LA64RELOC
 
 ## -r should keep original relocations.
 # RUN: ld.lld -r %t.64.o -o %t.64.r
-# RUN: llvm-objdump -dr %t.64.r | FileCheck %s --check-prefix=CHECKR
+# RUN: llvm-objdump -dr %t.64.r | FileCheck %s --check-prefix=RELAX
 
-## --no-relax should keep original relocations.
-## TODO Due to R_LARCH_RELAX is not relaxed, it plays same as --relax now.
 # RUN: ld.lld -Ttext=0x10000 --emit-relocs --no-relax %t.64.o -o %t.64.norelax
-# RUN: llvm-objdump -dr %t.64.norelax | FileCheck %s
-
-# CHECK:      00010000 <_start>:
-# CHECK-NEXT:   pcalau12i $a0, 0
-# CHECK-NEXT:     R_LARCH_PCALA_HI20 _start
-# CHECK-NEXT:     R_LARCH_RELAX *ABS*
-# CHECK-NEXT:   addi.{{[dw]}} $a0, $a0, 0
-# CHECK-NEXT:     R_LARCH_PCALA_LO12 _start
-# CHECK-NEXT:     R_LARCH_RELAX *ABS*
-# CHECK-NEXT:   nop
-# CHECK-NEXT:     R_LARCH_ALIGN *ABS*+0xc
-# CHECK-NEXT:   nop
-# CHECK-NEXT:   ret
-
-# CHECKR:      <_start>:
-# CHECKR-NEXT:   pcalau12i $a0, 0
-# CHECKR-NEXT:     R_LARCH_PCALA_HI20 _start
-# CHECKR-NEXT:     R_LARCH_RELAX *ABS*
-# CHECKR-NEXT:   addi.d $a0, $a0, 0
-# CHECKR-NEXT:     R_LARCH_PCALA_LO12 _start
-# CHECKR-NEXT:     R_LARCH_RELAX *ABS*
-# CHECKR-NEXT:   nop
-# CHECKR-NEXT:     R_LARCH_ALIGN *ABS*+0xc
-# CHECKR-NEXT:   nop
-# CHECKR-NEXT:   nop
-# CHECKR-NEXT:   ret
+# RUN: llvm-objdump -dr %t.64.norelax | FileCheck %s --check-prefix=NORELAX
+
+# LA32RELOC:      00010000 <_start>:
+# LA32RELOC-NEXT:   pcalau12i $a0, 0
----------------
ywgrit wrote:

> I wonder why LA32 doesn't relax?

This is added in the latest commit.

https://github.com/llvm/llvm-project/pull/112696