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llvm-mirror/test/CodeGen/WinEH/cppeh-nested-3.ll
Reid Kleckner 45072b933e 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

llvm-svn: 241633
2015-07-07 22:25:32 +00:00

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; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
; This test is based on the following code:
;
;void test()
;{
; try {
; try {
; may_throw();
; } catch (int i) {
; try {
; may_throw();
; }
; catch (int j) {
; i = j;
; }
; handle_int(i);
; }
; } catch (float f) {
; handle_float(f);
; }
; done();
;}
; ModuleID = 'cppeh-nested-3.cpp'
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc"
%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
$"\01??_R0M@8" = comdat any
$"\01??_R0H@8" = comdat any
@"\01??_7type_info@@6B@" = external constant i8*
@"\01??_R0M@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".M\00" }, comdat
@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
; CHECK: define void @"\01?test@@YAXXZ"()
; CHECK: entry:
; CHECK: %i = alloca i32, align 4
; CHECK: %j = alloca i32, align 4
; CHECK: %f = alloca float, align 4
; CHECK: call void (...) @llvm.localescape(i32* %j, i32* %i, float* %f)
; CHECK: invoke void @"\01?may_throw@@YAXXZ"()
; CHECK: to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]*]]
; Function Attrs: uwtable
define void @"\01?test@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
entry:
%exn.slot = alloca i8*
%ehselector.slot = alloca i32
%i = alloca i32, align 4
%j = alloca i32, align 4
%f = alloca float, align 4
invoke void @"\01?may_throw@@YAXXZ"()
to label %invoke.cont unwind label %lpad
invoke.cont: ; preds = %entry
br label %try.cont10
; CHECK: [[LPAD_LABEL]]:
; CHECK: landingpad { i8*, i32 }
; CHECK: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
; CHECK: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*)
; CHECK: [[RECOVER:\%.+]] = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32 1, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch.2", i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*), i32 2, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch.1")
; CHECK: indirectbr i8* [[RECOVER]], [label %try.cont10, label %try.cont19]
lpad: ; preds = %entry
%0 = landingpad { i8*, i32 }
catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*)
%1 = extractvalue { i8*, i32 } %0, 0
store i8* %1, i8** %exn.slot
%2 = extractvalue { i8*, i32 } %0, 1
store i32 %2, i32* %ehselector.slot
br label %catch.dispatch
; CHECK-NOT: catch.dispatch:
catch.dispatch: ; preds = %lpad
%sel = load i32, i32* %ehselector.slot
%3 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #3
%matches = icmp eq i32 %sel, %3
br i1 %matches, label %catch, label %catch.dispatch11
; CHECK-NOT: catch:
catch: ; preds = %catch.dispatch
%exn = load i8*, i8** %exn.slot
%4 = bitcast i32* %i to i8*
call void @llvm.eh.begincatch(i8* %exn, i8* %4) #3
invoke void @"\01?may_throw@@YAXXZ"()
to label %invoke.cont2 unwind label %lpad1
; CHECK-NOT: invoke.cont2:
invoke.cont2: ; preds = %catch
br label %try.cont
; CHECK-NOT: lpad1:
lpad1: ; preds = %catch
%5 = landingpad { i8*, i32 }
catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*)
%6 = extractvalue { i8*, i32 } %5, 0
store i8* %6, i8** %exn.slot
%7 = extractvalue { i8*, i32 } %5, 1
store i32 %7, i32* %ehselector.slot
br label %catch.dispatch3
; CHECK-NOT: catch.dispatch3:
catch.dispatch3: ; preds = %lpad1
%sel4 = load i32, i32* %ehselector.slot
%8 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #3
%matches5 = icmp eq i32 %sel4, %8
br i1 %matches5, label %catch6, label %catch.dispatch11
; CHECK-NOT: catch6:
catch6: ; preds = %catch.dispatch3
%exn7 = load i8*, i8** %exn.slot
%9 = bitcast i32* %j to i8*
call void @llvm.eh.begincatch(i8* %exn7, i8* %9) #3
%10 = load i32, i32* %j, align 4
store i32 %10, i32* %i, align 4
call void @llvm.eh.endcatch() #3
br label %try.cont
; CHECK-NOT: try.cont:
try.cont: ; preds = %catch6, %invoke.cont2
%11 = load i32, i32* %i, align 4
invoke void @"\01?handle_int@@YAXH@Z"(i32 %11)
to label %invoke.cont9 unwind label %lpad8
; CHECK-NOT: invoke.cont9:
invoke.cont9: ; preds = %try.cont
call void @llvm.eh.endcatch() #3
br label %try.cont10
try.cont10: ; preds = %invoke.cont9, %invoke.cont
br label %try.cont19
; CHECK-NOT: lpad8:
lpad8: ; preds = %try.cont
%12 = landingpad { i8*, i32 }
catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*)
%13 = extractvalue { i8*, i32 } %12, 0
store i8* %13, i8** %exn.slot
%14 = extractvalue { i8*, i32 } %12, 1
store i32 %14, i32* %ehselector.slot
call void @llvm.eh.endcatch() #3
br label %catch.dispatch11
; CHECK-NOT: catch.dispatch11:
catch.dispatch11: ; preds = %lpad8, %catch.dispatch3, %catch.dispatch
%sel12 = load i32, i32* %ehselector.slot
%15 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*)) #3
%matches13 = icmp eq i32 %sel12, %15
br i1 %matches13, label %catch14, label %eh.resume
; CHECK-NOT: catch14:
catch14: ; preds = %catch.dispatch11
%exn15 = load i8*, i8** %exn.slot
%16 = bitcast float* %f to i8*
call void @llvm.eh.begincatch(i8* %exn15, i8* %16) #3
%17 = load float, float* %f, align 4
call void @"\01?handle_float@@YAXM@Z"(float %17)
call void @llvm.eh.endcatch() #3
br label %try.cont19
try.cont19: ; preds = %catch14, %try.cont10
call void @"\01?done@@YAXXZ"()
ret void
; CHECK-NOT: eh.resume:
eh.resume: ; preds = %lpad16, %catch.dispatch11
%exn20 = load i8*, i8** %exn.slot
%sel21 = load i32, i32* %ehselector.slot
%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn20, 0
%lpad.val22 = insertvalue { i8*, i32 } %lpad.val, i32 %sel21, 1
resume { i8*, i32 } %lpad.val22
; CHECK: }
}
; CHECK: define internal i8* @"\01?test@@YAXXZ.catch"(i8*, i8*)
; CHECK: entry:
; CHECK: [[RECOVER_J:\%.+]] = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 0)
; CHECK: [[J_PTR:\%.+]] = bitcast i8* [[RECOVER_J]] to i32*
; CHECK: [[RECOVER_I1:\%.+]] = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 1)
; CHECK: [[I_PTR1:\%.+]] = bitcast i8* [[RECOVER_I1]] to i32*
; CHECK: [[TMP3:\%.+]] = load i32, i32* [[J_PTR]], align 4
; CHECK: store i32 [[TMP3]], i32* [[I_PTR1]]
; CHECK: ret i8* blockaddress(@"\01?test@@YAXXZ.catch.2", %invoke.cont2)
; CHECK: }
; CHECK: define internal i8* @"\01?test@@YAXXZ.catch.1"(i8*, i8*)
; CHECK: entry:
; CHECK: [[RECOVER_F:\%.+]] = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 2)
; CHECK: [[F_PTR:\%.+]] = bitcast i8* [[RECOVER_F]] to float*
; CHECK: [[TMP2:\%.+]] = load float, float* [[F_PTR]], align 4
; CHECK: call void @"\01?handle_float@@YAXM@Z"(float [[TMP2]])
; CHECK: ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont19)
; CHECK: }
; CHECK: define internal i8* @"\01?test@@YAXXZ.catch.2"(i8*, i8*)
; CHECK: entry:
; CHECK: [[RECOVER_I:\%.+]] = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 1)
; CHECK: [[I_PTR:\%.+]] = bitcast i8* [[RECOVER_I]] to i32*
; CHECK: invoke void @"\01?may_throw@@YAXXZ"()
; CHECK: to label %invoke.cont2 unwind label %[[LPAD1_LABEL:lpad[0-9]*]]
;
; CHECK: invoke.cont2: ; preds = %[[LPAD1_LABEL]], %entry
; CHECK: [[TMP1:\%.+]] = load i32, i32* [[I_PTR]], align 4
; CHECK: invoke void @"\01?handle_int@@YAXH@Z"(i32 [[TMP1]])
; CHECK: to label %invoke.cont9 unwind label %[[LPAD8_LABEL:lpad[0-9]*]]
;
; CHECK: [[LPAD1_LABEL]]:{{[ ]+}}; preds = %entry
; CHECK: [[LPAD1_VAL:\%.+]] = landingpad { i8*, i32 }
; CHECK: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
; CHECK: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*)
; CHECK: [[RECOVER1:\%.+]] = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32 0, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch", i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*), i32 2, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch.1")
; CHECK: indirectbr i8* [[RECOVER1]], [label %invoke.cont2]
;
; CHECK: invoke.cont9:
; CHECK: ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont10)
;
; CHECK: [[LPAD8_LABEL]]:{{[ ]+}}; preds = %invoke.cont2
; CHECK: [[LPAD8_VAL:\%.+]] = landingpad { i8*, i32 }
; CHECK: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*)
; CHECK: [[RECOVER2:\%.+]] = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0M@8" to i8*), i32 2, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch.1")
; CHECK: indirectbr i8* [[RECOVER2]], []
;
; CHECK: }
declare void @"\01?may_throw@@YAXXZ"() #1
declare i32 @__CxxFrameHandler3(...)
; Function Attrs: nounwind readnone
declare i32 @llvm.eh.typeid.for(i8*) #2
; Function Attrs: nounwind
declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #3
; Function Attrs: nounwind
declare void @llvm.eh.endcatch() #3
declare void @"\01?handle_int@@YAXH@Z"(i32) #1
declare void @"\01?handle_float@@YAXM@Z"(float) #1
declare void @"\01?done@@YAXXZ"() #1
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" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { nounwind readnone }
attributes #3 = { nounwind }
!llvm.module.flags = !{!0}
!llvm.ident = !{!1}
!0 = !{i32 1, !"PIC Level", i32 2}
!1 = !{!"clang version 3.7.0 (trunk 232069) (llvm/trunk 232070)"}
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