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| author | Reid Kleckner <rnk@google.com> | 2015-10-07 21:03:41 +0000 |
|---|---|---|
| committer | Reid Kleckner <rnk@google.com> | 2015-10-07 21:03:41 +0000 |
| commit | 1f88e93973024e8e59611553ad63fc913f6699e4 (patch) | |
| tree | f7142c0d9a6a146fa08ddb2e88836a20ece8d738 /clang/test/CodeGenCXX | |
| parent | 4462c6190e7164009bce6d6f0d2f37f14a41eabd (diff) | |
| download | bcm5719-llvm-1f88e93973024e8e59611553ad63fc913f6699e4.tar.gz bcm5719-llvm-1f88e93973024e8e59611553ad63fc913f6699e4.zip | |
[WinEH] Don't use lifetime markers for MS catch parameters
We don't have a good place to put them. Our previous spot was causing us
to optimize loads from the exception object to undef, because it was
after the catchpad instruction that models the write to the catch
object.
llvm-svn: 249616
Diffstat (limited to 'clang/test/CodeGenCXX')
| -rw-r--r-- | clang/test/CodeGenCXX/microsoft-abi-eh-catch.cpp | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/clang/test/CodeGenCXX/microsoft-abi-eh-catch.cpp b/clang/test/CodeGenCXX/microsoft-abi-eh-catch.cpp index d14edf8986b..e742f8b1c4a 100644 --- a/clang/test/CodeGenCXX/microsoft-abi-eh-catch.cpp +++ b/clang/test/CodeGenCXX/microsoft-abi-eh-catch.cpp @@ -1,5 +1,6 @@ // RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple=x86_64-pc-windows-msvc \ // RUN: -mconstructor-aliases -fexceptions -fcxx-exceptions -fnew-ms-eh \ +// RUN: -O1 -disable-llvm-optzns \ // RUN: | FileCheck -check-prefix WIN64 %s extern "C" void might_throw(); @@ -47,8 +48,17 @@ extern "C" void catch_int() { // WIN64-LABEL: define void @catch_int() // WIN64: catchpad [%rtti.TypeDescriptor2* @"\01??_R0H@8", i32 0, i32* %[[e_addr:[^\]]*]]] +// +// The catchpad instruction starts the lifetime of 'e'. Unfortunately, that +// leaves us with nowhere to put lifetime.start, so we don't emit lifetime +// markers for now. +// WIN64-NOT: lifetime.start +// // WIN64: %[[e_i8:[^ ]*]] = bitcast i32* %[[e_addr]] to i8* -// WIN64: call void @handle_exception(i8* %[[e_i8]]) +// WIN64-NOT: lifetime.start +// WIN64: call void @handle_exception +// WIN64-SAME: (i8* %[[e_i8]]) +// WIN64-NOT: lifetime.end // WIN64: catchret extern "C" void catch_int_unnamed() { |
