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SimplifyCFG allows tail merging with code which terminates in unreachable which, in turn, makes it possible for an invoke to end up in a funclet which it was not originally part of. Using operand bundles on invokes allows us to determine whether or not an invoke was part of a funclet in the source program. Furthermore, it allows us to unambiguously answer questions about the legality of inlining into call sites which the personality may have trouble with. Differential Revision: http://reviews.llvm.org/D15517 llvm-svn: 255674
83 lines
4.4 KiB
LLVM
83 lines
4.4 KiB
LLVM
; RUN: llc -march=x86-64 -print-machineinstrs=expand-isel-pseudos %s -o /dev/null 2>&1 | FileCheck %s
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; Check if the edge weight to the catchpad is calculated correctly.
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; CHECK: Successors according to CFG: BB#2(0x7ffff100 / 0x80000000 = 100.00%) BB#1(0x00000800 / 0x80000000 = 0.00%) BB#3(0x00000400 / 0x80000000 = 0.00%) BB#4(0x00000200 / 0x80000000 = 0.00%) BB#5(0x00000100 / 0x80000000 = 0.00%)
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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--windows-msvc18.0.0"
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%rtti.TypeDescriptor7 = type { i8**, i8*, [8 x i8] }
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%struct.HasDtor = type { i8 }
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$"\01??_R0?AUA@@@8" = comdat any
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$"\01??_R0?AUB@@@8" = comdat any
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$"\01??_R0?AUC@@@8" = comdat any
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@"\01??_7type_info@@6B@" = external constant i8*
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@"\01??_R0?AUA@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"\01??_7type_info@@6B@", i8* null, [8 x i8] c".?AUA@@\00" }, comdat
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@"\01??_R0?AUB@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"\01??_7type_info@@6B@", i8* null, [8 x i8] c".?AUB@@\00" }, comdat
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@"\01??_R0?AUC@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"\01??_7type_info@@6B@", i8* null, [8 x i8] c".?AUC@@\00" }, comdat
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; Function Attrs: uwtable
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define i32 @main() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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entry:
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%o = alloca %struct.HasDtor, align 1
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%0 = getelementptr inbounds %struct.HasDtor, %struct.HasDtor* %o, i64 0, i32 0
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call void @llvm.lifetime.start(i64 1, i8* %0) #4
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invoke void @"\01?may_throw@@YAXXZ"()
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to label %try.cont unwind label %catch.dispatch
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catch.dispatch: ; preds = %entry
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%cs1 = catchswitch within none [label %catch.5] unwind label %catch.dispatch.1
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catch.5: ; preds = %catch.dispatch
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%1 = catchpad within %cs1 [%rtti.TypeDescriptor7* @"\01??_R0?AUA@@@8", i32 0, i8* null]
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catchret from %1 to label %try.cont
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try.cont: ; preds = %entry, %catch, %catch.3, %catch.5
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call void @"\01??1HasDtor@@QEAA@XZ"(%struct.HasDtor* nonnull %o) #4
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call void @llvm.lifetime.end(i64 1, i8* %0) #4
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ret i32 0
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catch.dispatch.1: ; preds = %catch.dispatch
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%cs2 = catchswitch within none [label %catch.3] unwind label %catch.dispatch.2
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catch.3: ; preds = %catch.dispatch.1
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%2 = catchpad within %cs2 [%rtti.TypeDescriptor7* @"\01??_R0?AUB@@@8", i32 0, i8* null]
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catchret from %2 to label %try.cont
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catch.dispatch.2: ; preds = %catch.dispatch.1
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%cs3 = catchswitch within none [label %catch] unwind label %ehcleanup
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catch: ; preds = %catch.dispatch.2
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%3 = catchpad within %cs3 [%rtti.TypeDescriptor7* @"\01??_R0?AUC@@@8", i32 0, i8* null]
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catchret from %3 to label %try.cont
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ehcleanup: ; preds = %catchendblock
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%4 = cleanuppad within none []
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call void @"\01??1HasDtor@@QEAA@XZ"(%struct.HasDtor* nonnull %o) #4 [ "funclet"(token %4) ]
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cleanupret from %4 unwind to caller
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}
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; Function Attrs: nounwind argmemonly
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declare void @llvm.lifetime.start(i64, i8* nocapture) #1
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declare void @"\01?may_throw@@YAXXZ"() #2
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declare i32 @__CxxFrameHandler3(...)
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; Function Attrs: nounwind
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declare void @"\01??1HasDtor@@QEAA@XZ"(%struct.HasDtor*) #3
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; Function Attrs: nounwind argmemonly
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declare void @llvm.lifetime.end(i64, i8* nocapture) #1
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attributes #0 = { uwtable "disable-tail-calls"="false" "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"="+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind argmemonly }
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attributes #2 = { "disable-tail-calls"="false" "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"="+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #3 = { nounwind "disable-tail-calls"="false" "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"="+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #4 = { nounwind }
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