[llvm] Emit relax relocs when expand some LoadAddress (PR #72961)

[Fangrui Song via llvm-commits]

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@@ -0,0 +1,19 @@
+# RUN: llvm-mc --filetype=obj --triple=loongarch64 -mattr=+relax %s -o %t
+# RUN: llvm-readobj -r %t | FileCheck %s
+
+# CHECK:       Relocations [
+# CHECK-NEXT:    Section ({{.*}}) .rela.text {
+# CHECK-NEXT:      0x0 R_LARCH_PCALA_HI20 .L1 0x0
+# CHECK-NEXT:      0x0 R_LARCH_RELAX - 0x0
+# CHECK-NEXT:      0x4 R_LARCH_PCALA_LO12 .L1 0x0
+# CHECK-NEXT:      0x4 R_LARCH_RELAX - 0x0
+# CHECK-NEXT:      0x8 R_LARCH_GOT_PC_HI20 .L1 0x0
+# CHECK-NEXT:      0x8 R_LARCH_RELAX - 0x0
+# CHECK-NEXT:      0xC R_LARCH_GOT_PC_LO12 .L1 0x0
+# CHECK-NEXT:      0xC R_LARCH_RELAX - 0x0
+# CHECK-NEXT:    }
+
+.text
+.L1:
+  la.pcrel $a0, .L1
+  la.got   $a0, .L1
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MaskRay wrote:

`llvm/test/MC/LoongArch/Macros/macros-la.s` can be enhanced to test relocations.

https://github.com/llvm/llvm-project/pull/72961