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31 lines
960 B
31 lines
960 B
4 months ago
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; RUN: opt < %s -instcombine -S | FileCheck %s
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%struct.__va_list = type { i8*, i8*, i8*, i32, i32 }
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declare void @llvm.lifetime.start(i64, i8* nocapture)
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declare void @llvm.lifetime.end(i64, i8* nocapture)
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declare void @llvm.va_start(i8*)
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declare void @llvm.va_end(i8*)
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declare void @llvm.va_copy(i8*, i8*)
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define i32 @func(i8* nocapture readnone %fmt, ...) {
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; CHECK-LABEL: @func(
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; CHECK: entry:
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; CHECK-NEXT: ret i32 0
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entry:
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%va0 = alloca %struct.__va_list, align 8
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%va1 = alloca %struct.__va_list, align 8
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%0 = bitcast %struct.__va_list* %va0 to i8*
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%1 = bitcast %struct.__va_list* %va1 to i8*
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call void @llvm.lifetime.start(i64 32, i8* %0)
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call void @llvm.va_start(i8* %0)
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call void @llvm.lifetime.start(i64 32, i8* %1)
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call void @llvm.va_copy(i8* %1, i8* %0)
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call void @llvm.va_end(i8* %1)
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call void @llvm.lifetime.end(i64 32, i8* %1)
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call void @llvm.va_end(i8* %0)
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call void @llvm.lifetime.end(i64 32, i8* %0)
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ret i32 0
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}
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