mirror of
https://github.com/c64scene-ar/llvm-6502.git
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0a8ff297ad
Generate tables in the .xdata section representing what actions to take when an exception is thrown. This currently fills in state for cleanups, catch handlers are still unfinished. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233636 91177308-0d34-0410-b5e6-96231b3b80d8
325 lines
12 KiB
LLVM
325 lines
12 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 Inner {
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; public:
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; Inner();
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; ~Inner();
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; };
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; class Outer {
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; public:
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; Outer();
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; ~Outer();
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; };
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; void test() {
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; try {
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; Outer outer;
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; try {
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; Inner inner;
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; may_throw();
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; } catch (int i) {
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; handle_int(i);
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; }
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; } catch (float f) {
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; handle_float(f);
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; }
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; done();
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; }
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; ModuleID = 'nested-2.cpp'
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc"
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%class.Outer = type { i8 }
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%class.Inner = type { i8 }
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@_ZTIf = external constant i8*
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@_ZTIi = external constant i8*
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; The function entry should be rewritten like this.
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; CHECK: define void @_Z4testv()
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; CHECK: entry:
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; CHECK: %outer = alloca %class.Outer, align 1
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; CHECK: %inner = alloca %class.Inner, align 1
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; CHECK: %i = alloca i32, align 4
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; CHECK: %f = alloca float, align 4
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; CHECK: call void (...)* @llvm.frameescape(float* %f, i32* %i, %class.Outer* %outer, %class.Inner* %inner)
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; CHECK: invoke void @_ZN5OuterC1Ev(%class.Outer* %outer)
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; CHECK: to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]*]]
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; Function Attrs: uwtable
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define void @_Z4testv() #0 {
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entry:
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%outer = alloca %class.Outer, align 1
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%exn.slot = alloca i8*
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%ehselector.slot = alloca i32
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%inner = alloca %class.Inner, align 1
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%i = alloca i32, align 4
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%f = alloca float, align 4
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invoke void @_ZN5OuterC1Ev(%class.Outer* %outer)
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to label %invoke.cont unwind label %lpad
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; CHECK: invoke.cont:
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; CHECK: invoke void @_ZN5InnerC1Ev(%class.Inner* %inner)
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; CHECK: to label %invoke.cont2 unwind label %[[LPAD1_LABEL:lpad[0-9]*]]
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invoke.cont: ; preds = %entry
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invoke void @_ZN5InnerC1Ev(%class.Inner* %inner)
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to label %invoke.cont2 unwind label %lpad1
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; CHECK: invoke.cont2:
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; CHECK: invoke void @_Z9may_throwv()
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; CHECK: to label %invoke.cont4 unwind label %[[LPAD3_LABEL:lpad[0-9]*]]
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invoke.cont2: ; preds = %invoke.cont
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invoke void @_Z9may_throwv()
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to label %invoke.cont4 unwind label %lpad3
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; CHECK: invoke.cont4:
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; CHECK: invoke void @_ZN5InnerD1Ev(%class.Inner* %inner)
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; CHECK: to label %invoke.cont5 unwind label %[[LPAD1_LABEL]]
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invoke.cont4: ; preds = %invoke.cont2
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invoke void @_ZN5InnerD1Ev(%class.Inner* %inner)
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to label %invoke.cont5 unwind label %lpad1
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; CHECK: invoke.cont5:
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; CHECK: br label %try.cont
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invoke.cont5: ; preds = %invoke.cont4
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br label %try.cont
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; CHECK: [[LPAD_LABEL]]:
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; CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIf to i8*)
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; CHECK-NEXT: [[RECOVER:\%.+]] = call i8* (...)* @llvm.eh.actions(i32 1, i8* bitcast (i8** @_ZTIf to i8*), float* %f, i8* (i8*, i8*)* @_Z4testv.catch)
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; CHECK-NEXT: indirectbr i8* [[RECOVER]], [label %try.cont19]
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lpad: ; preds = %try.cont, %entry
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%tmp = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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catch i8* bitcast (i8** @_ZTIf to i8*)
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%tmp1 = extractvalue { i8*, i32 } %tmp, 0
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store i8* %tmp1, i8** %exn.slot
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%tmp2 = extractvalue { i8*, i32 } %tmp, 1
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store i32 %tmp2, i32* %ehselector.slot
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br label %catch.dispatch11
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; CHECK: [[LPAD1_LABEL]]:
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; CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
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; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIf to i8*)
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; CHECK-NEXT: [[RECOVER1:\%.+]] = call i8* (...)* @llvm.eh.actions(
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; CHECK-SAME: i32 1, i8* bitcast (i8** @_ZTIi to i8*), i32* %i, i8* (i8*, i8*)* @_Z4testv.catch1,
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; CHECK-SAME: i32 0, void (i8*, i8*)* @_Z4testv.cleanup,
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; CHECK-SAME: i32 1, i8* bitcast (i8** @_ZTIf to i8*), float* %f, i8* (i8*, i8*)* @_Z4testv.catch)
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; CHECK-NEXT: indirectbr i8* [[RECOVER1]], [label %try.cont, label %try.cont19]
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lpad1: ; preds = %invoke.cont4, %invoke.cont
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%tmp3 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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cleanup
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catch i8* bitcast (i8** @_ZTIi to i8*)
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catch i8* bitcast (i8** @_ZTIf to i8*)
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%tmp4 = extractvalue { i8*, i32 } %tmp3, 0
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store i8* %tmp4, i8** %exn.slot
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%tmp5 = extractvalue { i8*, i32 } %tmp3, 1
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store i32 %tmp5, i32* %ehselector.slot
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br label %catch.dispatch
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; CHECK: [[LPAD3_LABEL]]:
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; CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
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; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIf to i8*)
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; CHECK-NEXT: [[RECOVER3:\%.+]] = call i8* (...)* @llvm.eh.actions(
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; CHECK-SAME: i32 0, void (i8*, i8*)* @_Z4testv.cleanup2,
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; CHECK-SAME: i32 1, i8* bitcast (i8** @_ZTIi to i8*), i32* %i, i8* (i8*, i8*)* @_Z4testv.catch1,
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; CHECK-SAME: i32 0, void (i8*, i8*)* @_Z4testv.cleanup,
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; CHECK-SAME: i32 1, i8* bitcast (i8** @_ZTIf to i8*), float* %f, i8* (i8*, i8*)* @_Z4testv.catch)
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; CHECK-NEXT: indirectbr i8* [[RECOVER3]], [label %try.cont, label %try.cont19]
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lpad3: ; preds = %invoke.cont2
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%tmp6 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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cleanup
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catch i8* bitcast (i8** @_ZTIi to i8*)
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catch i8* bitcast (i8** @_ZTIf to i8*)
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%tmp7 = extractvalue { i8*, i32 } %tmp6, 0
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store i8* %tmp7, i8** %exn.slot
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%tmp8 = extractvalue { i8*, i32 } %tmp6, 1
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store i32 %tmp8, i32* %ehselector.slot
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call void @_ZN5InnerD1Ev(%class.Inner* %inner)
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br label %catch.dispatch
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; CHECK-NOT: catch.dispatch:
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catch.dispatch: ; preds = %lpad3, %lpad1
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%sel = load i32, i32* %ehselector.slot
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%tmp9 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) #4
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%matches = icmp eq i32 %sel, %tmp9
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br i1 %matches, label %catch, label %ehcleanup
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; CHECK-NOT: catch:
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catch: ; preds = %catch.dispatch
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%exn = load i8*, i8** %exn.slot
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%i.i8 = bitcast i32* %i to i8*
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call void @llvm.eh.begincatch(i8* %exn, i8* %i.i8) #4
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%tmp13 = load i32, i32* %i, align 4
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invoke void @_Z10handle_inti(i32 %tmp13)
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to label %invoke.cont8 unwind label %lpad7
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; CHECK-NOT: invoke.cont8:
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invoke.cont8: ; preds = %catch
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call void @llvm.eh.endcatch() #4
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br label %try.cont
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; CHECK: try.cont:
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; CHECK: invoke void @_ZN5OuterD1Ev(%class.Outer* %outer)
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; CHECK: to label %invoke.cont9 unwind label %[[LPAD_LABEL]]
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try.cont: ; preds = %invoke.cont8, %invoke.cont5
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invoke void @_ZN5OuterD1Ev(%class.Outer* %outer)
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to label %invoke.cont9 unwind label %lpad
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invoke.cont9: ; preds = %try.cont
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br label %try.cont19
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; CHECK-NOT: lpad7:
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lpad7: ; preds = %catch
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%tmp14 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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cleanup
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catch i8* bitcast (i8** @_ZTIf to i8*)
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%tmp15 = extractvalue { i8*, i32 } %tmp14, 0
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store i8* %tmp15, i8** %exn.slot
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%tmp16 = extractvalue { i8*, i32 } %tmp14, 1
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store i32 %tmp16, i32* %ehselector.slot
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call void @llvm.eh.endcatch() #4
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br label %ehcleanup
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; CHECK-NOT: ehcleanup: ; preds = %lpad7, %catch.dispatch
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ehcleanup: ; preds = %lpad7, %catch.dispatch
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call void @_ZN5OuterD1Ev(%class.Outer* %outer)
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br label %catch.dispatch11
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; CHECK-NOT: catch.dispatch11:
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catch.dispatch11: ; preds = %ehcleanup, %lpad
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%sel12 = load i32, i32* %ehselector.slot
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%tmp17 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIf to i8*)) #4
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%matches13 = icmp eq i32 %sel12, %tmp17
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br i1 %matches13, label %catch14, label %eh.resume
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; CHECK-NOT: catch14:
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catch14: ; preds = %catch.dispatch11
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%exn15 = load i8*, i8** %exn.slot
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%f.i8 = bitcast float* %f to i8*
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call void @llvm.eh.begincatch(i8* %exn15, i8* %f.i8) #4
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%tmp21 = load float, float* %f, align 4
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call void @_Z12handle_floatf(float %tmp21)
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call void @llvm.eh.endcatch() #4
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br label %try.cont19
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try.cont19: ; preds = %catch14, %invoke.cont9
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call void @_Z4donev()
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ret void
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; CHECK-NOT: eh.resume:
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eh.resume: ; preds = %catch.dispatch11
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%exn20 = load i8*, i8** %exn.slot
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%sel21 = load i32, i32* %ehselector.slot
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%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn20, 0
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%lpad.val22 = insertvalue { i8*, i32 } %lpad.val, i32 %sel21, 1
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resume { i8*, i32 } %lpad.val22
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; CHECK: }
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}
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; This catch handler should be outlined.
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; CHECK: define internal i8* @_Z4testv.catch(i8*, i8*)
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; CHECK: entry:
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; CHECK: [[RECOVER_F:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 0)
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; CHECK: [[F_PTR:\%.+]] = bitcast i8* [[RECOVER_F]] to float*
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; CHECK: [[TMP:\%.+]] = load float, float* [[F_PTR]], align 4
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; CHECK: call void @_Z12handle_floatf(float [[TMP]])
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; CHECK: ret i8* blockaddress(@_Z4testv, %try.cont19)
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; CHECK: }
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; This catch handler should be outlined.
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; CHECK: define internal i8* @_Z4testv.catch1(i8*, i8*)
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; CHECK: entry:
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; CHECK: [[RECOVER_I:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 1)
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; CHECK: [[I_PTR:\%.+]] = bitcast i8* [[RECOVER_I]] to i32*
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; CHECK: [[TMP1:\%.+]] = load i32, i32* [[I_PTR]], align 4
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; CHECK: invoke void @_Z10handle_inti(i32 [[TMP1]])
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; CHECK: to label %invoke.cont8 unwind label %[[LPAD7_LABEL:lpad[0-9]*]]
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;
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; CHECK: invoke.cont8: ; preds = %entry
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; CHECK: ret i8* blockaddress(@_Z4testv, %try.cont)
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;
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; CHECK: [[LPAD7_LABEL]]:{{[ ]+}}; preds = %entry
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; CHECK: [[LPAD7_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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; (FIXME) The nested handler body isn't being populated yet.
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; CHECK: }
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; This cleanup handler should be outlined.
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; CHECK: define internal void @_Z4testv.cleanup(i8*, i8*)
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; CHECK: entry:
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; CHECK: [[RECOVER_OUTER:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 2)
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; CHECK: [[OUTER_PTR:\%.+]] = bitcast i8* [[RECOVER_OUTER]] to %class.Outer*
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; CHECK: call void @_ZN5OuterD1Ev(%class.Outer* [[OUTER_PTR]])
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; CHECK: ret void
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; CHECK: }
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; This cleanup handler should be outlined.
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; CHECK: define internal void @_Z4testv.cleanup2(i8*, i8*)
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; CHECK: entry:
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; CHECK: [[RECOVER_INNER:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 3)
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; CHECK: [[INNER_PTR:\%.+]] = bitcast i8* [[RECOVER_INNER]] to %class.Inner*
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; CHECK: call void @_ZN5InnerD1Ev(%class.Inner* [[INNER_PTR]])
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; CHECK: ret void
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; CHECK: }
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declare void @_ZN5OuterC1Ev(%class.Outer*) #1
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declare i32 @__CxxFrameHandler3(...)
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declare void @_ZN5InnerC1Ev(%class.Inner*) #1
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declare void @_Z9may_throwv() #1
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declare void @_ZN5InnerD1Ev(%class.Inner*) #1
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declare void @llvm.eh.begincatch(i8*, i8*)
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; Function Attrs: nounwind readnone
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declare i32 @llvm.eh.typeid.for(i8*) #3
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declare void @_Z10handle_inti(i32) #1
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declare void @llvm.eh.endcatch()
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declare void @_ZN5OuterD1Ev(%class.Outer*) #1
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declare void @_Z12handle_floatf(float) #1
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declare void @_Z4donev() #1
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attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { noinline noreturn nounwind }
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attributes #3 = { nounwind readnone }
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attributes #4 = { nounwind }
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attributes #5 = { noreturn nounwind }
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!llvm.ident = !{!0}
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!0 = !{!"clang version 3.7.0 (trunk 226027)"}
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