[llvm] [JITLink][AArch32] Add test for ELF::R_ARM_THM_MOV{W_ABS_NC,T_ABS} (PR #70346)

[Eymen Ünay via llvm-commits]

https://github.com/eymay updated https://github.com/llvm/llvm-project/pull/70346

>From f915facb66cc878fce6b07f660af15d38ae278f0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Eymen=20=C3=9Cnay?= <eymenunay at outlook.com>
Date: Thu, 26 Oct 2023 18:24:14 +0300
Subject: [PATCH] [JITLink][AArch32] Add test for
 ELF::R_ARM_THM_MOV{W_ABS_NC,T_ABS}

Support for ELF::R_ARM_THM_MOVW_ABS_NC and ELF::R_ARM_THM_MOVT_ABS
was present but lacked tests. Test cases are similar to the ARM
versions of the relocations in ELF_static_arm_reloc.s.
---
 .../JITLink/AArch32/ELF_static_thumb_reloc.s  | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/llvm/test/ExecutionEngine/JITLink/AArch32/ELF_static_thumb_reloc.s b/llvm/test/ExecutionEngine/JITLink/AArch32/ELF_static_thumb_reloc.s
index b0d6db045efd216..c694a65ae1061aa 100644
--- a/llvm/test/ExecutionEngine/JITLink/AArch32/ELF_static_thumb_reloc.s
+++ b/llvm/test/ExecutionEngine/JITLink/AArch32/ELF_static_thumb_reloc.s
@@ -60,6 +60,41 @@ jump24_target:
 	bx	lr
 	.size	jump24_target,	.-jump24_target
 
+# CHECK-TYPE: {{[0-9a-f]+}} R_ARM_THM_MOVW_ABS_NC data_symbol
+# CHECK-INSTR: 	0000000c <movw>:
+# CHECK-INSTR: 	       c: f240 0000     movw    r0, #0x0
+# jitlink-check: decode_operand(movw, 1) = (data_symbol&0x0000ffff)
+	.globl	movw
+	.type	movw,%function
+	.p2align	1
+	.code	16
+	.thumb_func
+movw:
+	movw r0, :lower16:data_symbol
+	.size	movw,	.-movw
+
+# CHECK-TYPE: {{[0-9a-f]+}} R_ARM_THM_MOVT_ABS data_symbol
+# CHECK-INSTR: 	00000010 <movt>:
+# CHECK-INSTR: 	      10: f2c0 0000     movt    r0, #0x0
+# We decode the operand with index 2, because movt generates one leading implicit
+# predicate operand that we have to skip in order to decode the data_symbol operand
+# jitlink-check: decode_operand(movt, 2) = (data_symbol&0xffff0000>>16)
+	.globl	movt
+	.type	movt,%function
+	.p2align	1
+	.code	16
+	.thumb_func
+movt:
+	movt r0, :upper16:data_symbol
+	.size	movt,	.-movt
+
+	.data
+	.global data_symbol
+data_symbol:
+	.long 1073741822
+
+	.text
+
 # Empty main function for jitlink to be happy
 	.globl	main
 	.type	main,%function