6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-07-21 18:29:45 +00:00
Code Issues Projects Releases Wiki Activity
99d1c88279
llvm-6502/test/CodeGen/WinEH/cppeh-nested-rethrow.ll
Reid Kleckner 8f32e5f0d6 Rename llvm.frameescape and llvm.framerecover to localescape and localrecover 
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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241633 91177308-0d34-0410-b5e6-96231b3b80d8
2015-07-07 22:25:32 +00:00

213 lines
7.5 KiB
LLVM
Raw Blame History

; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
; This test was generated from the following code.
;
; void test1() {
; try {
; try {
; throw 1;
; } catch(...) { throw; }
; } catch (...) { }
; }
; void test2() {
; try {
; throw 1;
; } catch(...) {
; try {
; throw;
; } catch (...) {}
; }
; }
;
; These two functions result in functionally equivalent code, but the last
; catch block contains a call to llvm.eh.endcatch that tripped up processing
; during development.
;
; The main purpose of this test is to verify that we can correctly
; handle the case of nested landing pads that return directly to a block in
; the parent function.
; ModuleID = 'cppeh-nested-rethrow.cpp'
target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc"
%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
%eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 }
%eh.CatchableTypeArray.1 = type { i32, [1 x i32] }
%eh.ThrowInfo = type { i32, i32, i32, i32 }
$"\01??_R0H@8" = comdat any
$"_CT??_R0H@84" = comdat any
$_CTA1H = comdat any
$_TI1H = comdat any
@"\01??_7type_info@@6B@" = external constant i8*
@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
@__ImageBase = external constant i8
@"_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
@_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
@_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
; CHECK-LABEL: define void @"\01?test1@@YAXXZ"()
; CHECK: entry:
; CHECK: call void (...) @llvm.localescape
; Function Attrs: nounwind uwtable
define void @"\01?test1@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
entry:
%tmp = alloca i32, align 4
%exn.slot = alloca i8*
%ehselector.slot = alloca i32
store i32 1, i32* %tmp
%0 = bitcast i32* %tmp to i8*
invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #2
to label %unreachable unwind label %lpad
lpad: ; preds = %entry
%1 = landingpad { i8*, i32 }
catch i8* null
%2 = extractvalue { i8*, i32 } %1, 0
store i8* %2, i8** %exn.slot
%3 = extractvalue { i8*, i32 } %1, 1
store i32 %3, i32* %ehselector.slot
br label %catch
catch: ; preds = %lpad
%exn = load i8*, i8** %exn.slot
call void @llvm.eh.begincatch(i8* %exn, i8* null) #1
invoke void @_CxxThrowException(i8* null, %eh.ThrowInfo* null) #2
to label %unreachable unwind label %lpad1
lpad1: ; preds = %catch
%4 = landingpad { i8*, i32 }
catch i8* null
%5 = extractvalue { i8*, i32 } %4, 0
store i8* %5, i8** %exn.slot
%6 = extractvalue { i8*, i32 } %4, 1
store i32 %6, i32* %ehselector.slot
br label %catch2
catch2: ; preds = %lpad1
%exn3 = load i8*, i8** %exn.slot
call void @llvm.eh.begincatch(i8* %exn3, i8* null) #1
call void @llvm.eh.endcatch() #1
br label %try.cont.4
; This block should not be eliminated.
; CHECK: try.cont.4:
try.cont.4: ; preds = %catch2, %try.cont
ret void
try.cont: ; No predecessors!
br label %try.cont.4
unreachable: ; preds = %catch, %entry
unreachable
; CHECK: }
}
declare void @_CxxThrowException(i8*, %eh.ThrowInfo*)
declare i32 @__CxxFrameHandler3(...)
; Function Attrs: nounwind
declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #1
; Function Attrs: nounwind
declare void @llvm.eh.endcatch() #1
; CHECK-LABEL: define void @"\01?test2@@YAXXZ"()
; CHECK: entry:
; CHECK: call void (...) @llvm.localescape
; Function Attrs: nounwind uwtable
define void @"\01?test2@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
entry:
%tmp = alloca i32, align 4
%exn.slot = alloca i8*
%ehselector.slot = alloca i32
store i32 1, i32* %tmp
%0 = bitcast i32* %tmp to i8*
invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #2
to label %unreachable unwind label %lpad
lpad: ; preds = %entry
%1 = landingpad { i8*, i32 }
catch i8* null
%2 = extractvalue { i8*, i32 } %1, 0
store i8* %2, i8** %exn.slot
%3 = extractvalue { i8*, i32 } %1, 1
store i32 %3, i32* %ehselector.slot
br label %catch
catch: ; preds = %lpad
%exn = load i8*, i8** %exn.slot
call void @llvm.eh.begincatch(i8* %exn, i8* null) #1
invoke void @_CxxThrowException(i8* null, %eh.ThrowInfo* null) #2
to label %unreachable unwind label %lpad1
lpad1: ; preds = %catch
%4 = landingpad { i8*, i32 }
catch i8* null
%5 = extractvalue { i8*, i32 } %4, 0
store i8* %5, i8** %exn.slot
%6 = extractvalue { i8*, i32 } %4, 1
store i32 %6, i32* %ehselector.slot
br label %catch2
catch2: ; preds = %lpad1
%exn3 = load i8*, i8** %exn.slot
call void @llvm.eh.begincatch(i8* %exn3, i8* null) #1
call void @llvm.eh.endcatch() #1
br label %try.cont
; This block should not be eliminated.
; CHECK: try.cont:
; The endcatch call should be eliminated.
; CHECK-NOT: call void @llvm.eh.endcatch()
try.cont: ; preds = %catch2
call void @llvm.eh.endcatch() #1
br label %try.cont.4
try.cont.4: ; preds = %try.cont
ret void
unreachable: ; preds = %catch, %entry
unreachable
; CHECK: }
}
; The outlined test1.catch handler should return to a valid block address.
; CHECK-LABEL: define internal i8* @"\01?test1@@YAXXZ.catch"(i8*, i8*)
; CHECK-NOT: ret i8* inttoptr (i32 1 to i8*)
; CHECK: }
; The outlined test1.catch1 handler should not contain a return instruction.
; CHECK-LABEL: define internal i8* @"\01?test1@@YAXXZ.catch.1"(i8*, i8*)
; CHECK-NOT: ret
; CHECK: }
; The outlined test2.catch handler should return to a valid block address.
; CHECK-LABEL: define internal i8* @"\01?test2@@YAXXZ.catch"(i8*, i8*)
; CHECK-NOT: ret i8* inttoptr (i32 1 to i8*)
; CHECK: }
; The outlined test2.catch2 handler should not contain a return instruction.
; CHECK-LABEL: define internal i8* @"\01?test2@@YAXXZ.catch.2"(i8*, i8*)
; CHECK-NOT: ret
; CHECK: }
attributes #0 = { nounwind 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" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind }
attributes #2 = { noreturn }
!llvm.module.flags = !{!0}
!llvm.ident = !{!1}
!0 = !{i32 1, !"PIC Level", i32 2}
!1 = !{!"clang version 3.7.0 (trunk 236059)"}
Reference in New Issue View Git Blame Copy Permalink