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[ValueTracking] Look through ptrmask intrinsics during getUnderlyingO…
…bject. Reviewers: nlopes, efriedma, hfinkel, sanjoy, aqjune, jdoerfert Reviewed By: jdoerfert Subscribers: jdoerfert, hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D61669 llvm-svn: 369036
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; RUN: opt -basicaa -aa-eval -print-no-aliases -disable-output %s 2>&1 | FileCheck %s | ||
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%struct = type <{ [20 x i64] }> | ||
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; CHECK-LABEL: Function: test_noalias: 4 pointers, 1 call sites | ||
; CHECK-NEXT: NoAlias: %struct* %ptr1, i64* %ptr2 | ||
; CHECK-NEXT: NoAlias: %struct* %addr.ptr, i64* %ptr2 | ||
; CHECK-NEXT: NoAlias: i64* %gep, i64* %ptr2 | ||
define void @test_noalias(%struct* noalias %ptr1, i64* %ptr2, i64 %offset) { | ||
entry: | ||
%addr.ptr = call %struct* @llvm.ptrmask.p0s_struct.p0s.struct.i64(%struct* %ptr1, i64 72057594037927928) | ||
store i64 10, i64* %ptr2 | ||
%gep = getelementptr inbounds %struct, %struct* %addr.ptr, i64 0, i32 0, i64 %offset | ||
store i64 1, i64* %gep, align 8 | ||
ret void | ||
} | ||
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; CHECK-NEXT: Function: test_alias: 4 pointers, 1 call sites | ||
; CHECK-NOT: NoAlias | ||
define void @test_alias(%struct* %ptr1, i64* %ptr2, i64 %offset) { | ||
entry: | ||
%addr.ptr = call %struct* @llvm.ptrmask.p0s_struct.p0s.struct.i64(%struct* %ptr1, i64 72057594037927928) | ||
store i64 10, i64* %ptr2 | ||
%gep = getelementptr inbounds %struct, %struct* %addr.ptr, i64 0, i32 0, i64 %offset | ||
store i64 1, i64* %gep, align 8 | ||
ret void | ||
} | ||
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declare %struct* @llvm.ptrmask.p0s_struct.p0s.struct.i64(%struct*, i64) |