derek.holloway
7502bf64a4
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77 lines
2.0 KiB
LLVM
77 lines
2.0 KiB
LLVM
; RUN: llc -stack-symbol-ordering=0 < %s | FileCheck %s
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; The aligned alloca means that we have to realign the stack, which forces the
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; use of ESI to address local variables.
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target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
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target triple = "i686--windows-msvc"
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; Function Attrs: nounwind
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define void @realigned_try() personality ptr @_except_handler3 {
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entry:
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%x = alloca [4 x i32], align 16
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invoke void @useit(ptr %x)
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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 %__except.ret] unwind to caller
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__except.ret: ; preds = %catch.dispatch
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%pad = catchpad within %cs1 [ptr @"\01?filt$0@0@realigned_try@@"]
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catchret from %pad to label %__try.cont
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__try.cont: ; preds = %entry, %__except.ret
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ret void
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}
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; Function Attrs: nounwind argmemonly
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; Function Attrs: nounwind
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define internal i32 @"\01?filt$0@0@realigned_try@@"() {
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entry:
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ret i32 1
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}
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declare void @useit(ptr)
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declare i32 @_except_handler3(...)
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; CHECK-LABEL: _realigned_try:
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; Prologue
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; CHECK: pushl %ebp
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; CHECK: movl %esp, %ebp
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; CHECK: pushl %ebx
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; CHECK: pushl %edi
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; CHECK: pushl %esi
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; CHECK: andl $-16, %esp
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; CHECK: subl $64, %esp
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; CHECK: movl %esp, %esi
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; Spill EBP
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; CHECK: movl %ebp, 12(%esi)
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; Spill ESP
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; CHECK: movl %esp, 36(%esi)
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; The state is stored at ESI+56, the end of the node is ESI+60.
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; CHECK: movl $-1, 56(%esi)
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;
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; __try
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; CHECK: calll _useit
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;
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; Epilogue
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; CHECK: LBB0_2: # %__try.cont
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; CHECK: leal -12(%ebp), %esp
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; CHECK: popl %esi
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; CHECK: popl %edi
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; CHECK: popl %ebx
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; CHECK: popl %ebp
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; CHECK: retl
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;
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; CHECK: LBB0_1: # %__except.ret
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; Restore ESP
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; CHECK: movl -24(%ebp), %esp
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; Recompute ESI by subtracting 60 from the end of the registration node.
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; CHECK: leal -60(%ebp), %esi
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; Restore EBP
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; CHECK: movl 12(%esi), %ebp
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; Rejoin normal control flow
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; CHECK: jmp LBB0_2
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