232 lines
8.9 KiB
LLVM
232 lines
8.9 KiB
LLVM
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; RUN: llc < %s | FileCheck %s
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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-pc-windows-msvc"
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define void @try_except() #0 personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) {
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entry:
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%__exception_code = alloca i32, align 4
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call void (...) @llvm.localescape(i32* %__exception_code)
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invoke void @f(i32 1) #3
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to label %invoke.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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%0 = catchpad within %cs1 [i8* bitcast (i32 ()* @try_except_filter_catchall to i8*)]
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catchret from %0 to label %__except
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__except: ; preds = %__except.ret
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call void @f(i32 2)
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br label %__try.cont
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__try.cont: ; preds = %__except, %invoke.cont
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call void @f(i32 3)
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ret void
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invoke.cont: ; preds = %entry
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br label %__try.cont
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}
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; CHECK-LABEL: _try_except:
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; Store state #0
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; CHECK: movl $0, -[[state:[0-9]+]](%ebp)
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; CHECK: pushl $1
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; CHECK: calll _f
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; CHECK: movl $-1, -[[state]](%ebp)
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; CHECK: pushl $3
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; CHECK: calll _f
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; CHECK: retl
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; __except
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; CHECK: movl $-1, -[[state]](%ebp)
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; CHECK: pushl $2
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; CHECK: calll _f
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; CHECK: .section .xdata,"dr"
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; CHECK: L__ehtable$try_except:
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; CHECK: .long -1 # ToState
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; CHECK: .long _try_except_filter_catchall # Filter
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; CHECK: .long LBB0_1
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define internal i32 @try_except_filter_catchall() #0 {
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entry:
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%0 = call i8* @llvm.frameaddress(i32 1)
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%1 = call i8* @llvm.eh.recoverfp(i8* bitcast (void ()* @try_except to i8*), i8* %0)
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%2 = call i8* @llvm.localrecover(i8* bitcast (void ()* @try_except to i8*), i8* %1, i32 0)
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%__exception_code = bitcast i8* %2 to i32*
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%3 = getelementptr inbounds i8, i8* %0, i32 -20
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%4 = bitcast i8* %3 to i8**
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%5 = load i8*, i8** %4, align 4
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%6 = bitcast i8* %5 to { i32*, i8* }*
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%7 = getelementptr inbounds { i32*, i8* }, { i32*, i8* }* %6, i32 0, i32 0
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%8 = load i32*, i32** %7, align 4
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%9 = load i32, i32* %8, align 4
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store i32 %9, i32* %__exception_code, align 4
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ret i32 1
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}
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define void @nested_exceptions() #0 personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) {
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entry:
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%__exception_code = alloca i32, align 4
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call void (...) @llvm.localescape(i32* %__exception_code)
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invoke void @crash() #3
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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 label %catch.dispatch.11
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__except.ret: ; preds = %catch.dispatch
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%0 = catchpad within %cs1 [i8* bitcast (i32 ()* @nested_exceptions_filter_catchall to i8*)]
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catchret from %0 to label %__try.cont
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__try.cont: ; preds = %entry, %__except.ret
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invoke void @crash() #3
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to label %__try.cont.9 unwind label %catch.dispatch.5
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catch.dispatch.5: ; preds = %__try.cont
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%cs2 = catchswitch within none [label %__except.ret.7] unwind label %catch.dispatch.11
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__except.ret.7: ; preds = %catch.dispatch.5
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%1 = catchpad within %cs2 [i8* bitcast (i32 ()* @nested_exceptions_filter_catchall to i8*)]
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catchret from %1 to label %__try.cont.9
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__try.cont.9: ; preds = %__try.cont, %__except.ret.7
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invoke void @crash() #3
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to label %__try.cont.15 unwind label %catch.dispatch.11
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catch.dispatch.11: ; preds = %catchendblock, %catchendblock.6, %__try.cont.9
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%cs3 = catchswitch within none [label %__except.ret.13] unwind label %catch.dispatch.17
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__except.ret.13: ; preds = %catch.dispatch.11
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%2 = catchpad within %cs3 [i8* bitcast (i32 ()* @nested_exceptions_filter_catchall to i8*)]
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catchret from %2 to label %__try.cont.15
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__try.cont.15: ; preds = %__try.cont.9, %__except.ret.13
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invoke void @crash() #3
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to label %__try.cont.35 unwind label %catch.dispatch.17
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catch.dispatch.17: ; preds = %catchendblock.12, %__try.cont.15
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%cs4 = catchswitch within none [label %__except.ret.19] unwind to caller
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__except.ret.19: ; preds = %catch.dispatch.17
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%3 = catchpad within %cs4 [i8* bitcast (i32 ()* @nested_exceptions_filter_catchall to i8*)]
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catchret from %3 to label %__except.20
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__except.20: ; preds = %__except.ret.19
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invoke void @crash() #3
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to label %__try.cont.27 unwind label %catch.dispatch.23
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catch.dispatch.23: ; preds = %__except.20
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%cs5 = catchswitch within none [label %__except.ret.25] unwind to caller
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__except.ret.25: ; preds = %catch.dispatch.23
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%4 = catchpad within %cs5 [i8* bitcast (i32 ()* @nested_exceptions_filter_catchall to i8*)]
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catchret from %4 to label %__try.cont.27
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__try.cont.27: ; preds = %__except.20, %__except.ret.25
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invoke void @crash() #3
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to label %__try.cont.35 unwind label %catch.dispatch.30
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catch.dispatch.30: ; preds = %__try.cont.27
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%cs6 = catchswitch within none [label %__except.ret.32] unwind to caller
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__except.ret.32: ; preds = %catch.dispatch.30
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%5 = catchpad within %cs6 [i8* bitcast (i32 ()* @nested_exceptions_filter_catchall to i8*)]
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catchret from %5 to label %__try.cont.35
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__try.cont.35: ; preds = %__try.cont.15, %__try.cont.27, %__except.ret.32
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ret void
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}
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; This table is equivalent to the one produced by MSVC, even if it isn't in
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; quite the same order.
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; CHECK-LABEL: _nested_exceptions:
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; CHECK: L__ehtable$nested_exceptions:
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; CHECK: .long -1
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; CHECK: .long _nested_exceptions_filter_catchall
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; CHECK: .long LBB
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; CHECK: .long 0
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; CHECK: .long _nested_exceptions_filter_catchall
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; CHECK: .long LBB
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; CHECK: .long 1
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; CHECK: .long _nested_exceptions_filter_catchall
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; CHECK: .long LBB
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; CHECK: .long 1
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; CHECK: .long _nested_exceptions_filter_catchall
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; CHECK: .long LBB
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; CHECK: .long -1
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; CHECK: .long _nested_exceptions_filter_catchall
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; CHECK: .long LBB
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; CHECK: .long -1
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; CHECK: .long _nested_exceptions_filter_catchall
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; CHECK: .long LBB
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declare void @crash() #0
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define internal i32 @nested_exceptions_filter_catchall() #0 {
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entry:
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%0 = call i8* @llvm.frameaddress(i32 1)
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%1 = call i8* @llvm.eh.recoverfp(i8* bitcast (void ()* @nested_exceptions to i8*), i8* %0)
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%2 = call i8* @llvm.localrecover(i8* bitcast (void ()* @nested_exceptions to i8*), i8* %1, i32 0)
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%__exception_code3 = bitcast i8* %2 to i32*
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%3 = getelementptr inbounds i8, i8* %0, i32 -20
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%4 = bitcast i8* %3 to i8**
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%5 = load i8*, i8** %4, align 4
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%6 = bitcast i8* %5 to { i32*, i8* }*
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%7 = getelementptr inbounds { i32*, i8* }, { i32*, i8* }* %6, i32 0, i32 0
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%8 = load i32*, i32** %7, align 4
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%9 = load i32, i32* %8, align 4
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store i32 %9, i32* %__exception_code3, align 4
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ret i32 1
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}
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define void @code_in_catchpad() #0 personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) {
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entry:
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invoke void @f(i32 1) #3
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to label %__except 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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%0 = catchpad within %cs1 [i8* bitcast (i32 ()* @try_except_filter_catchall to i8*)]
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call void @f(i32 2) [ "funclet"(token %0) ]
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catchret from %0 to label %__except
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__except:
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ret void
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}
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; CHECK-LABEL: _code_in_catchpad:
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; CHECK: # %__except.ret
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; CHECK-NEXT: movl -24(%ebp), %esp
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; CHECK-NEXT: addl $12, %ebp
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; CHECK-NEXT: movl $-1, -16(%ebp)
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; CHECK-NEXT: pushl $2
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; CHECK-NEXT: calll _f
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; Function Attrs: nounwind readnone
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declare i8* @llvm.frameaddress(i32) #1
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; Function Attrs: nounwind readnone
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declare i8* @llvm.eh.recoverfp(i8*, i8*) #1
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; Function Attrs: nounwind readnone
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declare i8* @llvm.localrecover(i8*, i8*, i32) #1
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declare void @f(i32) #0
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declare i32 @_except_handler3(...)
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; Function Attrs: nounwind
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declare void @llvm.localescape(...) #2
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attributes #0 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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attributes #2 = { nounwind }
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attributes #3 = { noinline }
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