37 lines
936 B
LLVM
37 lines
936 B
LLVM
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; RUN: llc -mtriple=x86_64-unknown-linux < %s | FileCheck -check-prefix X8664 %s
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; RUN: llc -mtriple=i686-unknown-linux < %s | FileCheck -check-prefix X8632 %s
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; Check that all callee-saved registers are saved and restored in functions
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; that call __builtin_unwind_init(). This is its undocumented behavior in gcc,
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; and it is used in compiling libgcc_eh.
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; See also PR8541
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declare void @llvm.eh.unwind.init()
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define void @calls_unwind_init() {
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call void @llvm.eh.unwind.init()
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ret void
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}
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; X8664-LABEL: calls_unwind_init:
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; X8664: pushq %rbp
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; X8664: pushq %r15
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; X8664: pushq %r14
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; X8664: pushq %r13
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; X8664: pushq %r12
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; X8664: pushq %rbx
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; X8664: popq %rbx
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; X8664: popq %r12
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; X8664: popq %r13
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; X8664: popq %r14
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; X8664: popq %r15
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; X8632-LABEL: calls_unwind_init:
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; X8632: pushl %ebp
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; X8632: pushl %ebx
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; X8632: pushl %edi
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; X8632: pushl %esi
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; X8632: popl %esi
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; X8632: popl %edi
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; X8632: popl %ebx
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; X8632: popl %ebp
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