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f70ae59019
This patch adds support for funclets in frame lowering and ISel lowering. Together with D50288 and D50166, it enables C++ exception handling. Patch by Sanjin Sijaric, with some fixes by me. Differential Revision: https://reviews.llvm.org/D51524 llvm-svn: 346568
60 lines
2.2 KiB
LLVM
60 lines
2.2 KiB
LLVM
; RUN: llc -o - %s -mtriple=aarch64-windows -verify-machineinstrs | FileCheck %s
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; Make sure we have a base pointer.
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; CHECK-LABEL: "?a@@YAXXZ":
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; CHECK: and sp, x9, #0xffffffffffffffc0
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; CHECK: mov x19, sp
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; Make sure the funclet prologue/epilogue are correct: specifically,
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; it shouldn't access the parent's frame via sp, and the prologue and
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; epilogue should be symmetrical.
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; CHECK-LABEL: "?catch$2@?0??a@@YAXXZ@4HA":
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; CHECK: str x28, [sp, #-32]!
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; CHECK-NEXT: str x19, [sp, #8]
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; CHECK-NEXT: stp x29, x30, [sp, #16]
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; CHECK-NEXT: add x0, x19, #64
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; CHECK-NEXT: mov w1, wzr
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; CHECK-NEXT: bl "?bb@@YAXPEAHH@Z"
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; CHECK-NEXT: adrp x0, .LBB0_1
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; CHECK-NEXT: add x0, x0, .LBB0_1
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; CHECK-NEXT: ldp x29, x30, [sp, #16]
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; CHECK-NEXT: ldr x19, [sp, #8]
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; CHECK-NEXT: ldr x28, [sp], #32
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; CHECK-NEXT: ret
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target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64-unknown-windows-msvc19.11.0"
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define dso_local void @"?a@@YAXXZ"() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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entry:
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%a = alloca [100 x i32], align 64
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%0 = bitcast [100 x i32]* %a to i8*
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call void @llvm.memset.p0i8.i64(i8* nonnull align 64 %0, i8 0, i64 400, i1 false)
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%1 = getelementptr inbounds [100 x i32], [100 x i32]* %a, i64 0, i64 0
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store i32 305419896, i32* %1, align 64
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invoke void @"?bb@@YAXPEAHH@Z"(i32* nonnull %1, i32 1)
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to label %try.cont unwind label %catch.dispatch
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catch.dispatch: ; preds = %entry
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%2 = catchswitch within none [label %catch] unwind to caller
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catch: ; preds = %catch.dispatch
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%3 = catchpad within %2 [i8* null, i32 64, i8* null]
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call void @"?bb@@YAXPEAHH@Z"(i32* nonnull %1, i32 0) [ "funclet"(token %3) ]
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catchret from %3 to label %try.cont
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try.cont: ; preds = %entry, %catch
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call void @"?cc@@YAXXZ"()
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ret void
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}
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declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1)
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declare dso_local void @"?bb@@YAXPEAHH@Z"(i32*, i32)
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declare dso_local i32 @__CxxFrameHandler3(...)
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declare dso_local void @"?cc@@YAXXZ"()
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