93786da2cb
Much to my surprise, '-disable-llvm-optzns' which I thought was the magical flag I wanted to get at the raw LLVM IR coming out of Clang deosn't do that. It still runs some passes over the IR. I don't want that, I really want the *raw* IR coming out of Clang and I strongly suspect everyone else using it is in the same camp. There is actually a flag that does what I want that I didn't know about called '-disable-llvm-passes'. I suspect many others don't know about it either. It both does what I want and is much simpler. This removes the confusing version and makes that spelling of the flag an alias for '-disable-llvm-passes'. I've also moved everything in Clang to use the 'passes' spelling as it seems both more accurate (*all* LLVM passes are disabled, not just optimizations) and much easier to remember and spell correctly. This is part of simplifying how Clang drives LLVM to make it cleaner to wire up to the new pass manager. Differential Revision: https://reviews.llvm.org/D28047 llvm-svn: 290392
146 lines
4.5 KiB
C++
146 lines
4.5 KiB
C++
// RUN: %clang_cc1 -std=c++11 -fblocks -fms-extensions %s -triple=x86_64-windows-msvc -emit-llvm \
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// RUN: -o - -mconstructor-aliases -fcxx-exceptions -fexceptions | \
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// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CXXEH
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// RUN: %clang_cc1 -std=c++11 -fblocks -fms-extensions %s -triple=x86_64-windows-msvc -emit-llvm \
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// RUN: -o - -mconstructor-aliases -O1 -disable-llvm-passes | \
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// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=NOCXX
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extern "C" unsigned long _exception_code();
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extern "C" void might_throw();
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struct HasCleanup {
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HasCleanup();
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~HasCleanup();
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int padding;
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};
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extern "C" void use_cxx() {
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HasCleanup x;
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might_throw();
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}
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// Make sure we use __CxxFrameHandler3 for C++ EH.
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// CXXEH-LABEL: define void @use_cxx()
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// CXXEH-SAME: personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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// CXXEH: call %struct.HasCleanup* @"\01??0HasCleanup@@QEAA@XZ"(%struct.HasCleanup* %{{.*}})
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// CXXEH: invoke void @might_throw()
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// CXXEH: to label %[[cont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
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//
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// CXXEH: [[cont]]
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// CXXEH: call void @"\01??1HasCleanup@@QEAA@XZ"(%struct.HasCleanup* %{{.*}})
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// CXXEH: ret void
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//
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// CXXEH: [[lpad]]
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// CXXEH: cleanuppad
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// CXXEH: call void @"\01??1HasCleanup@@QEAA@XZ"(%struct.HasCleanup* %{{.*}})
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// CXXEH: cleanupret
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// NOCXX-LABEL: define void @use_cxx()
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// NOCXX-NOT: invoke
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// NOCXX: call %struct.HasCleanup* @"\01??0HasCleanup@@QEAA@XZ"(%struct.HasCleanup* %{{.*}})
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// NOCXX-NOT: invoke
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// NOCXX: call void @might_throw()
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// NOCXX-NOT: invoke
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// NOCXX: call void @"\01??1HasCleanup@@QEAA@XZ"(%struct.HasCleanup* %{{.*}})
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// NOCXX-NOT: invoke
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// NOCXX: ret void
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extern "C" void use_seh() {
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__try {
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might_throw();
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} __except(1) {
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}
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}
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// Make sure we use __C_specific_handler for SEH.
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// CHECK-LABEL: define void @use_seh()
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// CHECK-SAME: personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
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// CHECK: invoke void @might_throw() #[[NOINLINE:[0-9]+]]
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// CHECK: to label %[[cont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
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//
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// CHECK: [[lpad]]
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// CHECK-NEXT: %[[switch:.*]] = catchswitch within none [label %[[cpad:.*]]] unwind to caller
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//
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// CHECK: [[cpad]]
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// CHECK-NEXT: catchpad within %[[switch]]
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// CHECK: catchret {{.*}} label %[[except:[^ ]*]]
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//
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// CHECK: [[except]]
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// CHECK: br label %[[ret:[^ ]*]]
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//
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// CHECK: [[ret]]
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// CHECK: ret void
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//
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// CHECK: [[cont]]
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// CHECK: br label %[[ret]]
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void use_seh_in_lambda() {
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([]() {
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__try {
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might_throw();
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} __except(1) {
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}
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})();
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HasCleanup x;
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might_throw();
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}
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// CXXEH-LABEL: define void @"\01?use_seh_in_lambda@@YAXXZ"()
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// CXXEH-SAME: personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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// CXXEH: cleanuppad
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// NOCXX-LABEL: define void @"\01?use_seh_in_lambda@@YAXXZ"()
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// NOCXX-NOT: invoke
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// NOCXX: ret void
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// CHECK-LABEL: define internal void @"\01??R<lambda_0>@?0??use_seh_in_lambda@@YAXXZ@QEBA@XZ"(%class.anon* %this)
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// CXXEH-SAME: personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
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// CHECK: invoke void @might_throw() #[[NOINLINE]]
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// CHECK: catchpad
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static int my_unique_global;
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extern "C" inline void use_seh_in_inline_func() {
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__try {
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might_throw();
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} __except(_exception_code() == 424242) {
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}
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__try {
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might_throw();
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} __finally {
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my_unique_global = 1234;
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}
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}
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void use_inline() {
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use_seh_in_inline_func();
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}
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// CHECK-LABEL: define linkonce_odr void @use_seh_in_inline_func() #{{[0-9]+}} comdat
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// CHECK-SAME: personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
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// CHECK: invoke void @might_throw()
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//
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// CHECK: catchpad {{.*}} [i8* bitcast (i32 (i8*, i8*)* @"\01?filt$0@0@use_seh_in_inline_func@@" to i8*)]
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//
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// CHECK: invoke void @might_throw()
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//
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// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.localaddress()
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// CHECK: call void @"\01?fin$0@0@use_seh_in_inline_func@@"(i8 0, i8* %[[fp]])
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// CHECK: ret void
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//
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// CHECK: cleanuppad
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// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.localaddress()
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// CHECK: call void @"\01?fin$0@0@use_seh_in_inline_func@@"(i8 1, i8* %[[fp]])
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// CHECK-LABEL: define internal i32 @"\01?filt$0@0@use_seh_in_inline_func@@"(i8* %exception_pointers, i8* %frame_pointer) #{{[0-9]+}} comdat($use_seh_in_inline_func)
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// CHECK: icmp eq i32 %{{.*}}, 424242
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// CHECK: zext i1 %{{.*}} to i32
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// CHECK: ret i32
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// CHECK-LABEL: define internal void @"\01?fin$0@0@use_seh_in_inline_func@@"(i8 %abnormal_termination, i8* %frame_pointer) #{{[0-9]+}} comdat($use_seh_in_inline_func)
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// CHECK: store i32 1234, i32* @my_unique_global
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// CHECK: attributes #[[NOINLINE]] = { {{.*noinline.*}} }
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