[lld] [lld][LoongArch] Support the R_LARCH_{ADD,SUB}_ULEB128 relocation types (PR #81133)

[Lu Weining via llvm-commits]

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@@ -0,0 +1,100 @@
+# REQUIRES: loongarch
+# RUN: rm -rf %t && split-file %s %t && cd %t
+
+# RUN: llvm-mc --filetype=obj --triple=loongarch64 --mattr=+relax a.s -o a.o
+# RUN: llvm-readobj -r -x .gcc_except_table -x .debug_rnglists -x .debug_loclists a.o | FileCheck %s --check-prefix=REL
+# RUN: ld.lld -shared --gc-sections --noinhibit-exec a.o -o a.so
+# RUN: llvm-readelf -x .gcc_except_table -x .debug_rnglists -x .debug_loclists a.so | FileCheck %s
+
+# RUN: llvm-mc --filetype=obj --triple=loongarch32 --mattr=+relax extraspace.s -o extraspace32.o
+# RUN: llvm-mc --filetype=obj --triple=loongarch64 --mattr=+relax extraspace.s -o extraspace64.o --defsym=size64=1
+# RUN: not ld.lld -shared extraspace32.o 2>&1 | FileCheck %s --check-prefix=ERROR
+# RUN: not ld.lld -shared extraspace64.o 2>&1 | FileCheck %s --check-prefix=ERROR
+# ERROR: error: {{.*}}.o:(.rodata+0x0): extra space for uleb128
+
+#--- a.s
+.cfi_startproc
+.cfi_lsda 0x1b,.LLSDA0
+.cfi_endproc
+
+.section .text.w,"axR"
+break 0; break 0; break 0; w1:
+  .p2align 4    # 4 bytes after relaxation
+w2: break 0
+
+.section .text.x,"ax"
+break 0; break 0; break 0; x1:
+  .p2align 4    # 4 bytes after relaxation
+x2: break 0
+
+.section .gcc_except_table,"a"
+.LLSDA0:
+.uleb128 w2-w1+116                   # initial value: 0x0080
+.uleb128 w1-w2+141                   # initial value: 0x0080
+.uleb128 w2-w1+16372                 # initial value: 0x008080
+.uleb128 w1-w2+16397                 # initial value: 0x008080
+.uleb128 w2-w1+2097140               # initial value: 0x00808080
+.uleb128 w1-w2+2097165               # initial value: 0x00808080
+
+.section .debug_rnglists
+.uleb128 w2-w1+116                   # initial value: 0x0080
+.uleb128 w1-w2+141                   # initial value: 0x0080
+.uleb128 w2-w1+16372                 # initial value: 0x008080
+.uleb128 w1-w2+16397                 # initial value: 0x008080
+.uleb128 w2-w1+2097140               # initial value: 0x00808080
+.uleb128 w1-w2+2097165               # initial value: 0x00808080
+
+.section .debug_loclists
+.uleb128 x2-x1                       # references discarded symbols
+
+# REL:      Section ({{.*}}) .rela.debug_rnglists {
+# REL-NEXT:   0x0 R_LARCH_ADD_ULEB128 w2 0x74
+# REL-NEXT:   0x0 R_LARCH_SUB_ULEB128 w1 0x0
+# REL-NEXT:   0x2 R_LARCH_ADD_ULEB128 w1 0x8D
+# REL-NEXT:   0x2 R_LARCH_SUB_ULEB128 w2 0x0
+# REL-NEXT:   0x4 R_LARCH_ADD_ULEB128 w2 0x3FF4
+# REL-NEXT:   0x4 R_LARCH_SUB_ULEB128 w1 0x0
+# REL-NEXT:   0x7 R_LARCH_ADD_ULEB128 w1 0x400D
+# REL-NEXT:   0x7 R_LARCH_SUB_ULEB128 w2 0x0
+# REL-NEXT:   0xA R_LARCH_ADD_ULEB128 w2 0x1FFFF4
+# REL-NEXT:   0xA R_LARCH_SUB_ULEB128 w1 0x0
+# REL-NEXT:   0xE R_LARCH_ADD_ULEB128 w1 0x20000D
+# REL-NEXT:   0xE R_LARCH_SUB_ULEB128 w2 0x0
+# REL-NEXT: }
+# REL:      Section ({{.*}}) .rela.debug_loclists {
+# REL-NEXT:   0x0 R_LARCH_ADD_ULEB128 x2 0x0
+# REL-NEXT:   0x0 R_LARCH_SUB_ULEB128 x1 0x0
+# REL-NEXT: }
+
+# REL:      Hex dump of section '.gcc_except_table':
+# REL-NEXT: 0x00000000 80008000 80800080 80008080 80008080
+# REL-NEXT: 0x00000010 8000
----------------
SixWeining wrote:

Add `.` at the end of line to make the match more accurate.  The same as other lines.

https://github.com/llvm/llvm-project/pull/81133