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comparison test/Analysis/BasicAA/full-store-partial-alias.ll @ 95:afa8332a0e37 LLVM3.8

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LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 13 Oct 2015 17:48:58 +0900
parents 60c9769439b8
children 803732b1fca8
comparison
equal deleted inserted replaced
84:f3e34b893a5f 95:afa8332a0e37
1 ; RUN: opt -S -tbaa -basicaa -gvn < %s | FileCheck -check-prefix=BASICAA %s 1 ; RUN: opt -S -tbaa -gvn < %s | FileCheck -check-prefix=BASICAA %s
2 ; RUN: opt -S -tbaa -gvn < %s | FileCheck %s 2 ; RUN: opt -S -tbaa -disable-basicaa -gvn < %s | FileCheck %s
3 ; rdar://8875631, rdar://8875069 3 ; rdar://8875631, rdar://8875069
4 4
5 ; BasicAA should notice that the store stores to the entire %u object, 5 ; BasicAA should notice that the store stores to the entire %u object,
6 ; so the %tmp5 load is PartialAlias with the store and suppress TBAA. 6 ; so the %tmp5 load is PartialAlias with the store and suppress TBAA.
7 ; Without BasicAA, TBAA should say that %tmp5 is NoAlias with the store. 7 ; Without BasicAA, TBAA should say that %tmp5 is NoAlias with the store.
16 define i32 @signbit(double %x) nounwind { 16 define i32 @signbit(double %x) nounwind {
17 ; BASICAA: ret i32 %tmp5.lobit 17 ; BASICAA: ret i32 %tmp5.lobit
18 ; CHECK: ret i32 0 18 ; CHECK: ret i32 0
19 entry: 19 entry:
20 %u = alloca %union.anon, align 8 20 %u = alloca %union.anon, align 8
21 %tmp9 = getelementptr inbounds %union.anon* %u, i64 0, i32 0 21 %tmp9 = getelementptr inbounds %union.anon, %union.anon* %u, i64 0, i32 0
22 store double %x, double* %tmp9, align 8, !tbaa !0 22 store double %x, double* %tmp9, align 8, !tbaa !0
23 %tmp2 = load i32* bitcast (i64* @endianness_test to i32*), align 8, !tbaa !3 23 %tmp2 = load i32, i32* bitcast (i64* @endianness_test to i32*), align 8, !tbaa !3
24 %idxprom = sext i32 %tmp2 to i64 24 %idxprom = sext i32 %tmp2 to i64
25 %tmp4 = bitcast %union.anon* %u to [2 x i32]* 25 %tmp4 = bitcast %union.anon* %u to [2 x i32]*
26 %arrayidx = getelementptr inbounds [2 x i32]* %tmp4, i64 0, i64 %idxprom 26 %arrayidx = getelementptr inbounds [2 x i32], [2 x i32]* %tmp4, i64 0, i64 %idxprom
27 %tmp5 = load i32* %arrayidx, align 4, !tbaa !3 27 %tmp5 = load i32, i32* %arrayidx, align 4, !tbaa !3
28 %tmp5.lobit = lshr i32 %tmp5, 31 28 %tmp5.lobit = lshr i32 %tmp5, 31
29 ret i32 %tmp5.lobit 29 ret i32 %tmp5.lobit
30 } 30 }
31 31
32 !0 = !{!4, !4, i64 0} 32 !0 = !{!4, !4, i64 0}