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https://github.com/c64scene-ar/llvm-6502.git
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2a77e6bdd1
The CFL-AA implementation was missing a visit* routine for va_arg instructions, causing it to assert when run on a function that had one. For now, handle these in a conservative way. Fixes PR20954. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219718 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
761 B
LLVM
30 lines
761 B
LLVM
; RUN: opt < %s -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
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; CHECK-LABEL: Function: test1
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; CHECK: 0 no alias responses
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define i32 @test1(i32 %X, ...) {
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; Initialize variable argument processing
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%ap = alloca i8*
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%ap2 = bitcast i8** %ap to i8*
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call void @llvm.va_start(i8* %ap2)
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; Read a single integer argument
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%tmp = va_arg i8** %ap, i32
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; Demonstrate usage of llvm.va_copy and llvm.va_end
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%aq = alloca i8*
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%aq2 = bitcast i8** %aq to i8*
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call void @llvm.va_copy(i8* %aq2, i8* %ap2)
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call void @llvm.va_end(i8* %aq2)
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; Stop processing of arguments.
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call void @llvm.va_end(i8* %ap2)
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ret i32 %tmp
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}
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declare void @llvm.va_start(i8*)
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declare void @llvm.va_copy(i8*, i8*)
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declare void @llvm.va_end(i8*)
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