2461cdb417
Once the default for SimplifyCFG flips, we can no longer pass nullptr instead of DomTree to SimplifyCFG, so we need to propagate it here. We don't strictly need to actually preserve DomTree in DwarfEHPrepare, but we might as well do it, since it's trivial.
86 lines
3.1 KiB
LLVM
86 lines
3.1 KiB
LLVM
; Check if landing pads are kept in a separate eh section
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; RUN: llc -simplifycfg-require-and-preserve-domtree=1 < %s -mtriple=i386-unknown-linux-gnu -function-sections -basic-block-sections=all -unique-basic-block-section-names | FileCheck %s -check-prefix=LINUX-SECTIONS
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@_ZTIb = external dso_local constant i8*
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define i32 @_Z3foob(i1 zeroext %0) #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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%2 = alloca i32, align 4
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%3 = alloca i8, align 1
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%4 = alloca i8*
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%5 = alloca i32
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%6 = alloca i8, align 1
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%7 = zext i1 %0 to i8
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store i8 %7, i8* %3, align 1
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%8 = load i8, i8* %3, align 1
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%9 = trunc i8 %8 to i1
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br i1 %9, label %10, label %11
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10: ; preds = %1
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store i32 1, i32* %2, align 4
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br label %31
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11: ; preds = %1
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%12 = call i8* @__cxa_allocate_exception(i64 1) #2
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%13 = load i8, i8* %3, align 1
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%14 = trunc i8 %13 to i1
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%15 = zext i1 %14 to i8
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store i8 %15, i8* %12, align 16
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invoke void @__cxa_throw(i8* %12, i8* bitcast (i8** @_ZTIb to i8*), i8* null) #3
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to label %38 unwind label %16
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16: ; preds = %11
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%17 = landingpad { i8*, i32 }
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catch i8* bitcast (i8** @_ZTIb to i8*)
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%18 = extractvalue { i8*, i32 } %17, 0
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store i8* %18, i8** %4, align 8
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%19 = extractvalue { i8*, i32 } %17, 1
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store i32 %19, i32* %5, align 4
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br label %20
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20: ; preds = %16
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%21 = load i32, i32* %5, align 4
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%22 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIb to i8*)) #2
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%23 = icmp eq i32 %21, %22
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br i1 %23, label %24, label %33
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24: ; preds = %20
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%25 = load i8*, i8** %4, align 8
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%26 = call i8* @__cxa_begin_catch(i8* %25) #2
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%27 = load i8, i8* %26, align 1
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%28 = trunc i8 %27 to i1
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%29 = zext i1 %28 to i8
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store i8 %29, i8* %6, align 1
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call void @__cxa_end_catch() #2
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br label %30
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30: ; preds = %24
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store i32 0, i32* %2, align 4
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br label %31
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31: ; preds = %30, %10
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%32 = load i32, i32* %2, align 4
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ret i32 %32
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33: ; preds = %20
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%34 = load i8*, i8** %4, align 8
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%35 = load i32, i32* %5, align 4
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%36 = insertvalue { i8*, i32 } undef, i8* %34, 0
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%37 = insertvalue { i8*, i32 } %36, i32 %35, 1
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resume { i8*, i32 } %37
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38: ; preds = %11
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unreachable
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}
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declare i8* @__cxa_allocate_exception(i64)
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declare void @__cxa_throw(i8*, i8*, i8*)
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declare i32 @__gxx_personality_v0(...)
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; Function Attrs: nounwind readnone
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declare i32 @llvm.eh.typeid.for(i8*) #1
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declare i8* @__cxa_begin_catch(i8*)
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declare void @__cxa_end_catch()
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;LINUX-SECTIONS: .section .text._Z3foob,"ax",@progbits
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;LINUX-SECTIONS: _Z3foob:
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;LINUX-SECTIONS: .section .text._Z3foob._Z3foob.__part.{{[0-9]+}},"ax",@progbits
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;LINUX-SECTIONS-LABEL: _Z3foob.__part.{{[0-9]+}}:
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;LINUX-SECTIONS: calll __cxa_begin_catch
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