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; 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
|
