[llvm] [LoongArch][test] Test 8- and 16-bit subtraction relocations. NFC (PR #222825)

[via llvm-commits]

llvmorg-github-actions[bot] wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-loongarch

Author: wanglei (wangleiat)

<details>
<summary>Changes</summary>

Add MC tests for 1- and 2-byte subtraction relocations enabled by #<!-- -->211754.


---
Full diff: https://github.com/llvm/llvm-project/pull/222825.diff


1 Files Affected:

- (modified) llvm/test/MC/LoongArch/Relocations/sub-expr.s (+24-2) 


``````````diff
diff --git a/llvm/test/MC/LoongArch/Relocations/sub-expr.s b/llvm/test/MC/LoongArch/Relocations/sub-expr.s
index 78305852d1a50..bbc51d5e46714 100644
--- a/llvm/test/MC/LoongArch/Relocations/sub-expr.s
+++ b/llvm/test/MC/LoongArch/Relocations/sub-expr.s
@@ -5,8 +5,6 @@
 
 ## Check that subtraction expressions emit R_LARCH_32_PCREL and R_LARCH_64_PCREL relocations.
 
-## TODO: 1- or 2-byte data relocations are not supported for now.
-
 # CHECK:        Relocations [
 # NORELAX-NEXT:   Section ({{.*}}) .rela.sx {
 # NORELAX-NEXT:     0x4 R_LARCH_PCALA_HI20 z 0x0
@@ -42,6 +40,22 @@
 # CHECK-NEXT:       0x40 R_LARCH_64_PCREL - 0xBEEF
 # CHECK-NEXT:       0x48 R_LARCH_32_PCREL extsym 0x8
 # CHECK-NEXT:       0x4C R_LARCH_64_PCREL extsym 0xC
+# CHECK-NEXT:       0x54 R_LARCH_ADD16 x 0x0
+# CHECK-NEXT:       0x54 R_LARCH_SUB16 .L0  0x0
+# CHECK-NEXT:       0x56 R_LARCH_ADD16 y 0x0
+# CHECK-NEXT:       0x56 R_LARCH_SUB16 .L0  0x0
+# CHECK-NEXT:       0x58 R_LARCH_ADD8 x 0x0
+# CHECK-NEXT:       0x58 R_LARCH_SUB8 .L0  0x0
+# CHECK-NEXT:       0x59 R_LARCH_ADD8 y 0x0
+# CHECK-NEXT:       0x59 R_LARCH_SUB8 .L0  0x0
+# CHECK-NEXT:       0x5A R_LARCH_ADD16 x 0x0
+# CHECK-NEXT:       0x5A R_LARCH_SUB16 y 0x0
+# CHECK-NEXT:       0x5C R_LARCH_ADD16 y 0x0
+# CHECK-NEXT:       0x5C R_LARCH_SUB16 x 0x0
+# CHECK-NEXT:       0x5E R_LARCH_ADD8 x 0x0
+# CHECK-NEXT:       0x5E R_LARCH_SUB8 y 0x0
+# CHECK-NEXT:       0x5F R_LARCH_ADD8 y 0x0
+# CHECK-NEXT:       0x5F R_LARCH_SUB8 x 0x0
 
 # CHECK-NEXT:     }
 # NORELAX-NEXT:   Section ({{.*}}) .rela.sy {
@@ -80,6 +94,14 @@ la.pcrel $a0, z
 .8byte 0xbeef-1b
 .4byte extsym-1b
 .8byte extsym-1b
+.2byte x-.
+.2byte y-.
+.byte x-.
+.byte y-.
+.2byte x-y
+.2byte y-x
+.byte x-y
+.byte y-x
 
 .section .sy,"ax"
 call36 foo

``````````

</details>


https://github.com/llvm/llvm-project/pull/222825