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test: add a test for windows itanium exceptions

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Some time ago, I noticed that try would get resolved incorrectly for Windows
Itanium targets.  Add an explicit test to exsure that exceptions are handled
correctly for Windows Itanium environments.

llvm-svn: 211992
This commit is contained in:
Saleem Abdulrasool 2014-06-28 23:34:15 +00:00
parent 24bd7da2d2
commit a666910c42
1 changed files with 46 additions and 0 deletions
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46
clang/test/CodeGenCXX/windows-itanium-exceptions.cpp Normal file
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// RUN: %clang_cc1 -emit-llvm -triple thumbv7-windows-itanium -fexceptions -fcxx-exceptions %s -o - | FileCheck %s
// RUN: %clang_cc1 -emit-llvm -triple i686-windows-itanium -fexceptions -fcxx-exceptions %s -o - | FileCheck %s
void except() {
throw 32;
}
void attempt() {
try { except(); } catch (...) { }
}
// CHECK: @_ZTIi = external constant i8*
// CHECK: define {{.*}}void @_Z6exceptv() {{.*}} {
// CHECK: %exception = call {{.*}}i8* @__cxa_allocate_exception(i32 4)
// CHECK: %0 = bitcast i8* %exception to i32*
// CHECK: store i32 32, i32* %0
// CHECK: call {{.*}}void @__cxa_throw(i8* %exception, i8* bitcast (i8** @_ZTIi to i8*), i8* null)
// CHECK: unreachable
// CHECK: }
// CHECK: define {{.*}}void @_Z7attemptv() {{.*}} {
// CHECK: %exn.slot = alloca i8*
// CHECK: %ehselector.slot = alloca i32
// CHECK: invoke {{.*}}void @_Z6exceptv()
// CHECK: to label %invoke.cont unwind label %lpad
// CHECK: invoke.cont:
// CHECK: br label %try.cont
// CHECK: lpad:
// CHECK: %0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
// CHECK: catch i8* null
// CHECK: %1 = extractvalue { i8*, i32 } %0, 0
// CHECK: store i8* %1, i8** %exn.slot
// CHECK: %2 = extractvalue { i8*, i32 } %0, 1
// CHECK: store i32 %2, i32* %ehselector.slot
// CHECK: br label %catch
// CHECK: catch:
// CHECK: %exn = load i8** %exn.slot
// CHECK: %3 = call {{.*}}i8* @__cxa_begin_catch(i8* %{{2|exn}})
// CHECK: call {{.*}}void @__cxa_end_catch()
// CHECK: br label %try.cont
// CHECK: try.cont:
// CHECK: ret void
// CHECK: }