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780b59a41c
Most of the properties of memset_pattern16 can be now covered by the generic attributes and inferred by InferFunctionAttrs. The only exceptions are: - We don't yet have a writeonly attribute for the first argument. - We don't have an attribute for modeling the access size facts encoded in MemoryLocation.cpp. Differential Revision: http://reviews.llvm.org/D15879 llvm-svn: 256911
22 lines
717 B
LLVM
22 lines
717 B
LLVM
; RUN: opt -S -basicaa -gvn < %s | FileCheck %s
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; PR10872
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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target triple = "x86_64-apple-macosx10.7"
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@z = internal global i32 0, align 4
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@y = internal global i32 0, align 4
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@x = internal constant i32 0, align 4
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; CHECK: @test
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define i32 @test() nounwind uwtable ssp {
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entry:
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store i32 1, i32* @z
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tail call void @memset_pattern16(i8* bitcast (i32* @y to i8*), i8* bitcast (i32* @x to i8*), i64 4) nounwind
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; CHECK-NOT: load
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%l = load i32, i32* @z
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; CHECK: ret i32 1
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ret i32 %l
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}
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declare void @memset_pattern16(i8*, i8* readonly, i64) argmemonly
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