Files
llvm/test/CodeGen/X86/win64_eh_leaf.ll
T
Reid Kleckner 6e53fe29f3 Mark functions as not having CFI once we finalize an x86 stack frame
We'll set it back to true in emitPrologue if it gets called. It doesn't
get called for naked functions.

Fixes PR32912

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302092 91177308-0d34-0410-b5e6-96231b3b80d8
2017-05-03 23:13:42 +00:00

41 lines
874 B
LLVM

; RUN: llc < %s -O1 -mtriple=x86_64-pc-win32 | FileCheck %s -check-prefix=ASM
; RUN: llc < %s -O1 -mtriple=x86_64-pc-win32 -filetype=obj -o %t
; RUN: llvm-readobj -unwind %t | FileCheck %s -check-prefix=READOBJ
declare void @g(i32)
define i32 @not_leaf(i32) uwtable {
entry:
call void @g(i32 42)
ret i32 42
; ASM-LABEL: not_leaf:
; ASM: .seh
; READOBJ: RuntimeFunction {
; READOBJ-NEXT: StartAddress: not_leaf
; READOBJ-NEXT: EndAddress: not_leaf
}
define void @leaf_func(i32) uwtable {
entry:
tail call void @g(i32 42)
ret void
; A Win64 "leaf" function gets no .seh directives in the asm.
; ASM-LABEL: leaf_func:
; ASM-NOT: .seh
; and no unwind info in the object file.
; READOBJ-NOT: leaf_func
}
define void @naked_func() naked {
call void asm sideeffect "ret", ""()
unreachable
}
; ASM-LABEL: naked_func:
; ASM-NOT: .seh_
; ASM: ret
; ASM-NOT: .seh_