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a72e83c26e
For historic reasons, the behavior of .align differs between targets. Fortunately, there are alternatives, .p2align and .balign, which make the interpretation of the parameter explicit, and which behave consistently across targets. This patch teaches MC to use .p2align instead of .align, so that people reading code for multiple architectures don't have to remember which way each platform does its .align directive. Differential Revision: http://reviews.llvm.org/D16549 llvm-svn: 258750
62 lines
1.7 KiB
LLVM
62 lines
1.7 KiB
LLVM
; Test for handlerdata when the function has landingpad and nounwind.
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; This test case checks whether the handlerdata is generated for the function
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; with landingpad instruction, even if the function has "nounwind" atttribute.
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;
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; For example, although the following function never throws any exception,
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; however, it is still required to generate LSDA, otherwise, we can't catch
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; the exception properly.
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;
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; void test1() noexcept {
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; try {
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; throw_exception();
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; } catch (...) {
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; }
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; }
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; RUN: llc -mtriple arm-unknown-linux-gnueabi -filetype=asm -o - %s \
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; RUN: | FileCheck %s
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declare void @throw_exception()
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declare i32 @__gxx_personality_v0(...)
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declare i8* @__cxa_begin_catch(i8*)
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declare void @__cxa_end_catch()
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define void @test1() nounwind personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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invoke void @throw_exception() to label %try.cont unwind label %lpad
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lpad:
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%0 = landingpad { i8*, i32 }
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catch i8* null
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%1 = extractvalue { i8*, i32 } %0, 0
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%2 = tail call i8* @__cxa_begin_catch(i8* %1)
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tail call void @__cxa_end_catch()
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br label %try.cont
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try.cont:
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ret void
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}
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; CHECK: .globl test1
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; CHECK: .p2align 2
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; CHECK: .type test1,%function
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; CHECK-LABEL: test1:
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; CHECK: .fnstart
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; CHECK-NOT: .cantunwind
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; CHECK: .personality __gxx_personality_v0
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; CHECK: .handlerdata
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; CHECK: .p2align 2
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; CHECK-LABEL: GCC_except_table0:
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; CHECK-LABEL: .Lexception0:
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; CHECK: .byte 255 @ @LPStart Encoding = omit
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; CHECK: .byte 0 @ @TType Encoding = absptr
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; CHECK: .asciz
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; CHECK: .byte 3 @ Call site Encoding = udata4
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; CHECK: .fnend
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