mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-21 18:29:45 +00:00
f5864fffc3
If the function has the landingpad instruction, then the
handlerdata should be emitted even if the function has
nouwnind attribute. Otherwise, following code will not
work:
void test1() noexcept {
try {
throw_exception();
} catch (...) {
log_unexpected_exception();
}
}
Since the cantunwind was incorrectly emitted and the
LSDA is not available.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208791 91177308-0d34-0410-b5e6-96231b3b80d8
62 lines
1.6 KiB
LLVM
62 lines
1.6 KiB
LLVM
; Test for handlerdata when the function has landingpad and nounwind.
|
|
|
|
; This test case checks whether the handlerdata is generated for the function
|
|
; with landingpad instruction, even if the function has "nounwind" atttribute.
|
|
;
|
|
; For example, although the following function never throws any exception,
|
|
; however, it is still required to generate LSDA, otherwise, we can't catch
|
|
; the exception properly.
|
|
;
|
|
; void test1() noexcept {
|
|
; try {
|
|
; throw_exception();
|
|
; } catch (...) {
|
|
; }
|
|
; }
|
|
|
|
; RUN: llc -mtriple arm-unknown-linux-gnueabi -filetype=asm -o - %s \
|
|
; RUN: | FileCheck %s
|
|
|
|
declare void @throw_exception()
|
|
|
|
declare i32 @__gxx_personality_v0(...)
|
|
|
|
declare i8* @__cxa_begin_catch(i8*)
|
|
|
|
declare void @__cxa_end_catch()
|
|
|
|
define void @test1() nounwind {
|
|
entry:
|
|
invoke void @throw_exception() to label %try.cont unwind label %lpad
|
|
|
|
lpad:
|
|
%0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
|
|
catch i8* null
|
|
%1 = extractvalue { i8*, i32 } %0, 0
|
|
%2 = tail call i8* @__cxa_begin_catch(i8* %1)
|
|
tail call void @__cxa_end_catch()
|
|
br label %try.cont
|
|
|
|
try.cont:
|
|
ret void
|
|
}
|
|
|
|
; CHECK: .globl test1
|
|
; CHECK: .align 2
|
|
; CHECK: .type test1,%function
|
|
; CHECK-LABEL: test1:
|
|
; CHECK: .fnstart
|
|
|
|
; CHECK-NOT: .cantunwind
|
|
|
|
; CHECK: .personality __gxx_personality_v0
|
|
; CHECK: .handlerdata
|
|
; CHECK: .align 2
|
|
; CHECK-LABEL: GCC_except_table0:
|
|
; CHECK-LABEL: .Lexception0:
|
|
; CHECK: .byte 255 @ @LPStart Encoding = omit
|
|
; CHECK: .byte 0 @ @TType Encoding = absptr
|
|
; CHECK: .asciz
|
|
; CHECK: .byte 3 @ Call site Encoding = udata4
|
|
; CHECK: .fnend
|