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https://github.com/RPCS3/llvm-mirror.git
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45072b933e
Summary: Initially, these intrinsics seemed like part of a family of "frame" related intrinsics, but now I think that's more confusing than helpful. Initially, the LangRef specified that this would create a new kind of allocation that would be allocated at a fixed offset from the frame pointer (EBP/RBP). We ended up dropping that design, and leaving the stack frame layout alone. These intrinsics are really about sharing local stack allocations, not frame pointers. I intend to go further and add an `llvm.localaddress()` intrinsic that returns whatever register (EBP, ESI, ESP, RBX) is being used to address locals, which should not be confused with the frame pointer. Naming suggestions at this point are welcome, I'm happy to re-run sed. Reviewers: majnemer, nicholas Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D11011 llvm-svn: 241633
144 lines
5.3 KiB
LLVM
144 lines
5.3 KiB
LLVM
; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
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; This test is based on the following code:
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;
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; class Obj {
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; public:
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; ~Obj();
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; };
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;
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; void test(void)
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; {
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; try {
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; Obj o;
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; throw 1;
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; } catch (...) {
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; throw;
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; }
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; }
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; ModuleID = 'cppeh-catch-and-throw.cpp'
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc"
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%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
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%eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 }
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%eh.CatchableTypeArray.1 = type { i32, [1 x i32] }
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%eh.ThrowInfo = type { i32, i32, i32, i32 }
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%class.Obj = type { i8 }
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$"\01??_R0H@8" = comdat any
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$"_CT??_R0H@84" = comdat any
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$_CTA1H = comdat any
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$_TI1H = comdat any
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@"\01??_7type_info@@6B@" = external constant i8*
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@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
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@__ImageBase = external constant i8
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@"_CT??_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 4, i32 0 }, section ".xdata", comdat
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@_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableType* @"_CT??_R0H@84" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32)] }, section ".xdata", comdat
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@_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableTypeArray.1* @_CTA1H to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, section ".xdata", comdat
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; This is just a minimal check to verify that main was handled by WinEHPrepare.
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; CHECK: define void @"\01?test@@YAXXZ"()
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; CHECK: entry:
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; CHECK: call void (...) @llvm.localescape
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; CHECK: invoke void @_CxxThrowException
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; CHECK: }
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; Function Attrs: uwtable
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define void @"\01?test@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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entry:
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%o = alloca %class.Obj, align 1
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%tmp = alloca i32, align 4
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%exn.slot = alloca i8*
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%ehselector.slot = alloca i32
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store i32 1, i32* %tmp
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%0 = bitcast i32* %tmp to i8*
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invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #3
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to label %unreachable unwind label %lpad
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lpad: ; preds = %entry
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%1 = landingpad { i8*, i32 }
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catch i8* null
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%2 = extractvalue { i8*, i32 } %1, 0
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store i8* %2, i8** %exn.slot
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%3 = extractvalue { i8*, i32 } %1, 1
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store i32 %3, i32* %ehselector.slot
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call void @"\01??1Obj@@QEAA@XZ"(%class.Obj* %o) #2
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br label %catch
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catch: ; preds = %lpad
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%exn = load i8*, i8** %exn.slot
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call void @llvm.eh.begincatch(i8* %exn, i8* null) #2
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invoke void @_CxxThrowException(i8* null, %eh.ThrowInfo* null) #3
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to label %unreachable unwind label %lpad1
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lpad1: ; preds = %catch
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%4 = landingpad { i8*, i32 }
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cleanup
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%5 = extractvalue { i8*, i32 } %4, 0
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store i8* %5, i8** %exn.slot
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%6 = extractvalue { i8*, i32 } %4, 1
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store i32 %6, i32* %ehselector.slot
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call void @llvm.eh.endcatch() #2
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br label %eh.resume
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try.cont: ; No predecessors!
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ret void
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eh.resume: ; preds = %lpad1
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%exn2 = load i8*, i8** %exn.slot
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%sel = load i32, i32* %ehselector.slot
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%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn2, 0
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%lpad.val3 = insertvalue { i8*, i32 } %lpad.val, i32 %sel, 1
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resume { i8*, i32 } %lpad.val3
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unreachable: ; preds = %catch, %entry
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unreachable
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}
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; Verify that we inserted a stub invoke into the outlined cleanup handler.
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;
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; CHECK-LABEL: define internal void @"\01?test@@YAXXZ.cleanup"(i8*, i8*)
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; CHECK: entry:
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; CHECK: call i8* @llvm.localrecover
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; CHECK: call void @"\01??1Obj@@QEAA@XZ"
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; CHECK: invoke void @llvm.donothing()
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; CHECK: to label %[[SPLIT_LABEL:.+]] unwind label %[[LPAD_LABEL:.+]]
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;
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; CHECK: [[SPLIT_LABEL]]
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;
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; CHECK: [[LPAD_LABEL]]
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; CHECK: landingpad { i8*, i32 }
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; CHECK: cleanup
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; CHECK: unreachable
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; CHECK: }
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declare void @_CxxThrowException(i8*, %eh.ThrowInfo*)
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declare i32 @__CxxFrameHandler3(...)
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; Function Attrs: nounwind
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declare void @"\01??1Obj@@QEAA@XZ"(%class.Obj*) #1
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; Function Attrs: nounwind
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declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #2
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; Function Attrs: nounwind
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declare void @llvm.eh.endcatch() #2
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attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind }
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attributes #3 = { noreturn }
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!llvm.module.flags = !{!0}
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!llvm.ident = !{!1}
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!0 = !{i32 1, !"PIC Level", i32 2}
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!1 = !{!"clang version 3.7.0 (trunk 235214) (llvm/trunk 235213)"}
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