derek.holloway
7502bf64a4
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320 lines
8.8 KiB
LLVM
320 lines
8.8 KiB
LLVM
; RUN: llc -mtriple=x86_64-unknown-windows-msvc -o - %s | FileCheck %s
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; RUN: llc -mtriple=x86_64-unknown-windows-msvc -o - %s \
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; RUN: -x86-wineh-unwindv2-unwind-codes-threshold=8 | FileCheck %s \
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; RUN: -check-prefixes=ALLOWLESS,CHECK
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define dso_local void @no_epilog() local_unnamed_addr {
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entry:
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ret void
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}
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; CHECK-LABEL: no_epilog:
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; CHECK-NOT: .seh_
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; CHECK: retq
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define dso_local void @stack_alloc_no_pushes() local_unnamed_addr {
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entry:
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call void @a()
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ret void
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}
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; CHECK-LABEL: stack_alloc_no_pushes:
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; CHECK: .seh_unwindversion 2
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; CHECK-NOT: .seh_pushreg
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; CHECK: .seh_stackalloc
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; CHECK: .seh_endprologue
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; CHECK-NOT: .seh_endproc
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: addq
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; CHECK-NEXT: .seh_unwindv2start
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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define dso_local i32 @stack_alloc_and_pushes(i32 %x) local_unnamed_addr {
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entry:
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%call = tail call i32 @c(i32 %x)
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%call1 = tail call i32 @c(i32 %x)
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%add = add nsw i32 %call1, %call
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%call2 = tail call i32 @c(i32 %x)
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%call3 = tail call i32 @c(i32 %call2)
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%add4 = add nsw i32 %add, %call3
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ret i32 %add4
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}
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; CHECK-LABEL: stack_alloc_and_pushes:
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; CHECK: .seh_unwindversion 2
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; CHECK: .seh_pushreg %rsi
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; CHECK: .seh_pushreg %rdi
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; CHECK: .seh_pushreg %rbx
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; CHECK: .seh_stackalloc
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; CHECK: .seh_endprologue
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; CHECK-NOT: .seh_endproc
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: addq
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; CHECK-NEXT: .seh_unwindv2start
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; CHECK-NEXT: popq %rbx
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; CHECK-NEXT: popq %rdi
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; CHECK-NEXT: popq %rsi
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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define dso_local i32 @tail_call(i32 %x) local_unnamed_addr {
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entry:
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%call = tail call i32 @c(i32 %x)
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%call1 = tail call i32 @c(i32 %call)
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ret i32 %call1
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}
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; CHECK-LABEL: tail_call:
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; CHECK: .seh_unwindversion 2
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; CHECK-NOT: .seh_pushreg
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; CHECK: .seh_stackalloc
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; CHECK: .seh_endprologue
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; CHECK-NOT: .seh_endproc
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: addq
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; CHECK-NEXT: .seh_unwindv2start
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: jmp
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define dso_local i32 @multiple_epilogs(i32 %x) local_unnamed_addr {
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entry:
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%call = tail call i32 @c(i32 noundef %x)
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%cmp = icmp sgt i32 %call, 0
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br i1 %cmp, label %if.then, label %if.else
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if.then:
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%call1 = tail call i32 @c(i32 noundef %call)
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ret i32 %call1
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if.else:
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%call2 = tail call i32 @b()
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ret i32 %call2
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}
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; CHECK-LABEL: multiple_epilogs:
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; CHECK: .seh_unwindversion 2
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; CHECK-NOT: .seh_pushreg
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; CHECK: .seh_stackalloc
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; CHECK: .seh_endprologue
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; CHECK-NOT: .seh_endproc
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: addq
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; CHECK-NEXT: .seh_unwindv2start
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: jmp
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; CHECK-NOT: .seh_endproc
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: addq
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; CHECK-NEXT: .seh_unwindv2start
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: jmp
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define dso_local i32 @mismatched_terminators() local_unnamed_addr {
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entry:
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%call = tail call i32 @b()
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%cmp = icmp sgt i32 %call, 0
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br i1 %cmp, label %if.then, label %if.else
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if.then:
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%call1 = tail call i32 @b()
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ret i32 %call1
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if.else:
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ret i32 %call
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}
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; CHECK-LABEL: mismatched_terminators:
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; CHECK: .seh_unwindversion 2
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; CHECK-NOT: .seh_pushreg
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; CHECK: .seh_stackalloc
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; CHECK: .seh_endprologue
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; CHECK-NOT: .seh_endproc
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: addq
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; CHECK-NEXT: .seh_unwindv2start
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: jmp
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; CHECK-NOT: .seh_endproc
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: addq
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; CHECK-NEXT: .seh_unwindv2start
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: ret
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define dso_local void @dynamic_stack_alloc(i32 %x) local_unnamed_addr {
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entry:
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%y = alloca i32, i32 %x
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ret void
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}
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; CHECK-LABEL: dynamic_stack_alloc:
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; CHECK: .seh_unwindversion 2
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; CHECK: .seh_pushreg %rbp
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; CHECK: .seh_setframe %rbp, 0
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; CHECK: .seh_endprologue
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; CHECK-NOT: .seh_endproc
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: movq %rbp, %rsp
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; CHECK-NEXT: .seh_unwindv2start
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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define dso_local void @large_aligned_alloc() align 16 {
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%1 = alloca [128 x i8], align 64
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ret void
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}
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; CHECK-LABEL: large_aligned_alloc:
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; CHECK: .seh_unwindversion 2
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; CHECK: .seh_pushreg %rbp
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; CHECK: .seh_stackalloc 176
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; CHECK: .seh_setframe %rbp, 128
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; CHECK: .seh_endprologue
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; CHECK-NOT: .seh_endproc
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: leaq 48(%rbp), %rsp
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; CHECK-NEXT: .seh_unwindv2start
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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define dso_local void @set_frame_only() local_unnamed_addr {
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tail call i64 @llvm.x86.flags.read.u64()
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ret void
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}
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; CHECK-LABEL: set_frame_only:
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; CHECK: .seh_unwindversion 2
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; CHECK: .seh_pushreg %rbp
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; CHECK: .seh_setframe %rbp, 0
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; CHECK: .seh_endprologue
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; CHECK-NOT: .seh_endproc
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: .seh_unwindv2start
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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attributes #1 = { noreturn }
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define dso_local void @no_return_func() local_unnamed_addr #1 {
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entry:
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call void @d()
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unreachable
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}
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; CHECK-LABEL: no_return_func:
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; CHECK-NOT: .seh_unwindversion 2
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; CHECK: .seh_stackalloc
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NOT: .seh_startepilogue
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; CHECK-NOT: .seh_unwindv2start
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; CHECK: int3
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; CHECK-NEXT: .seh_endproc
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define dso_local i32 @has_funclet(i32 %x) local_unnamed_addr personality ptr @__C_specific_handler {
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entry:
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%call = invoke i32 @c(i32 %x)
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to label %call.block.1 unwind label %cleanup
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call.block.1:
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%call1 = invoke i32 @c(i32 %x)
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to label %call.block.2 unwind label %cleanup
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call.block.2:
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%add = add nsw i32 %call1, %call
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%call2 = invoke i32 @c(i32 %x)
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to label %call.block.3 unwind label %cleanup
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call.block.3:
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%call3 = invoke i32 @c(i32 %call2)
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to label %call.block.4 unwind label %cleanup
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call.block.4:
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%add4 = add nsw i32 %add, %call3
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ret i32 %add4
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cleanup:
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%cleanup_token = cleanuppad within none []
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call fastcc void @is_funclet(i32 %x) #18 [ "funclet"(token %cleanup_token) ]
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cleanupret from %cleanup_token unwind to caller
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}
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define internal fastcc void @is_funclet(i32 %x) local_unnamed_addr {
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entry:
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%y = alloca i32, i32 %x
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ret void
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}
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; CHECK-LABEL: has_funclet:
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; CHECK: .seh_pushreg %rbp
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; CHECK: .seh_pushreg %rsi
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; CHECK: .seh_pushreg %rdi
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; CHECK: .seh_stackalloc 48
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; CHECK: .seh_setframe %rbp, 48
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; CHECK: .seh_endprologue
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; CHECK: .seh_startepilogue
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; CHECK: .seh_unwindv2start
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; CHECK-NEXT: popq %rdi
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; CHECK-NEXT: popq %rsi
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; ALLOWLESS-NEXT: .seh_splitchained
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; ALLOWLESS-NEXT: .seh_endprologue
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; CHECK-NEXT: .seh_handlerdata
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; CHECK: .text
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; CHECK-NEXT: .seh_endproc
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; CHECK-LABEL: "?dtor$5@?0?has_funclet@4HA":
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; CHECK: .seh_pushreg %rbp
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; CHECK: .seh_pushreg %rsi
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; CHECK: .seh_pushreg %rdi
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; CHECK: .seh_stackalloc 32
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; CHECK: .seh_endprologue
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; CHECK: .seh_startepilogue
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; CHECK: .seh_unwindv2start
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; CHECK-NEXT: popq %rdi
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; CHECK-NEXT: popq %rsi
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK: .seh_handlerdata
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; CHECK-NEXT: .text
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; CHECK-NEXT: .seh_endproc
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; CHECK-LABEL: is_funclet:
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; CHECK: .seh_unwindversion 2
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; CHECK: .seh_pushreg %rbp
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; CHECK: .seh_setframe %rbp, 0
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; CHECK: .seh_endprologue
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; CHECK: .seh_startepilogue
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; CHECK: .seh_unwindv2start
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; CHECK: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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define dso_local void @set_frame_and_alloc(i32 %x) local_unnamed_addr {
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%y = alloca i32, i32 %x
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%z = alloca ptr, align 8
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ret void
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}
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; CHECK-LABEL: set_frame_and_alloc:
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; CHECK: .seh_unwindversion 2
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; CHECK: .seh_pushreg %rbp
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; CHECK: .seh_stackalloc 16
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; CHECK: .seh_setframe %rbp, 16
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; CHECK: .seh_endprologue
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; CHECK: .seh_startepilogue
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; CHECK-NEXT: movq %rbp, %rsp
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; CHECK-NEXT: .seh_unwindv2start
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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declare i64 @llvm.x86.flags.read.u64()
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declare void @a() local_unnamed_addr
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declare i32 @b() local_unnamed_addr
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declare i32 @c(i32) local_unnamed_addr
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declare void @d() local_unnamed_addr #1
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declare dso_local i32 @__C_specific_handler(...)
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!llvm.module.flags = !{!0}
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!0 = !{i32 1, !"winx64-eh-unwindv2", i32 2}
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