[llvm] [BOLT] Fix long jump negative offset issue. (PR #67132)

[via llvm-commits]

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@@ -0,0 +1,111 @@
+# This test checks long call negative offset boundary(0x8000000) for aarch64.
+
+# REQUIRES: system-linux
+
+# RUN: %clang %s -o %t.exe -nostartfiles -fuse-ld=lld -Wl,-z,now,-q \
+# RUN:   -Wl,--script=%p/Inputs/long-jmp-offset-boundary.ld
+# RUN: llvm-bolt %t.exe -o %t.bolt.exe -skip-funcs="foo.*"
+# RUN: llvm-objdump -d %t.bolt.exe | FileCheck %s
+# CHECK: 0000000000000100 <foo>:
+# CHECK: 8000100: {{.*}}	bl	0x100 <foo>
+
+	.text
+	.section	foo_section,"ax", at progbits
+	.globl	foo
+	.p2align	2
+	.type	foo, at function
+foo:
+	.cfi_startproc
+// %bb.0:
+	ret
+.Lfunc_end0:
+	.size	foo, .Lfunc_end0-foo
+	.cfi_endproc
+
+	.section	main_section,"ax", at progbits
+	.globl	main                            // -- Begin function main
+	.p2align	2
+	.type	main, at function
+main:
+	.cfi_startproc
+// %bb.0:
+	mov	w8, #100
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qijitao wrote:

Yes, I just need the bl foo instruction. I'll find a way to delete the other instructions.

https://github.com/llvm/llvm-project/pull/67132