[InstCombine] Signed saturation patterns
[llvm-complete.git] / test / Analysis / LazyValueAnalysis / invalidation.ll
blob67b6c9859396ec7543ba84baa5de126bfcc5104d
1 ; Test that the lazy value analysis gets invalidated when its dependencies go
2 ; away. Sadly, you can neither print nor verify LVI so we just have to require
3 ; it and check that the pass manager does the right thing.
5 ; Check basic invalidation.
6 ; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
7 ; RUN:     -passes='require<lazy-value-info>,invalidate<lazy-value-info>,require<lazy-value-info>' \
8 ; RUN:     | FileCheck %s --check-prefix=CHECK-INVALIDATE
9 ; CHECK-INVALIDATE: Running pass: RequireAnalysisPass
10 ; CHECK-INVALIDATE: Running analysis: LazyValueAnalysis
11 ; CHECK-INVALIDATE: Running pass: InvalidateAnalysisPass
12 ; CHECK-INVALIDATE: Invalidating analysis: LazyValueAnalysis
13 ; CHECK-INVALIDATE: Running pass: RequireAnalysisPass
14 ; CHECK-INVALIDATE: Running analysis: LazyValueAnalysis
16 ; Check DomTree specifically.
17 ; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
18 ; RUN:     -passes='require<domtree>,require<lazy-value-info>,invalidate<domtree>,require<lazy-value-info>' \
19 ; RUN:     | FileCheck %s --check-prefix=CHECK-DT-INVALIDATE
20 ; CHECK-DT-INVALIDATE: Running pass: RequireAnalysisPass
21 ; CHECK-DT-INVALIDATE: Running analysis: LazyValueAnalysis
22 ; CHECK-DT-INVALIDATE: Running pass: InvalidateAnalysisPass
23 ; CHECK-DT-INVALIDATE: Invalidating analysis: DominatorTreeAnalysis
24 ; CHECK-DT-INVALIDATE: Invalidating analysis: LazyValueAnalysis
25 ; CHECK-AC-INVALIDATE: Running pass: RequireAnalysisPass
26 ; CHECK-DT-INVALIDATE: Running analysis: LazyValueAnalysis
28 target triple = "x86_64-unknown-linux-gnu"
30 @.str = private unnamed_addr constant [8 x i8] c"a = %l\0A\00", align 1
32 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
34 declare void @hoo(i64*)
36 declare i32 @printf(i8* nocapture readonly, ...)
38 declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
40 define void @goo(i32 %N, i64* %b) {
41 entry:
42   %a.i = alloca i64, align 8
43   %tmp = bitcast i64* %a.i to i8*
44   %c = getelementptr inbounds i64, i64* %b, i64 0
45   br label %for.cond
47 for.cond:                                         ; preds = %for.body, %entry
48   %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
49   %cmp = icmp slt i32 %i.0, %N
50   br i1 %cmp, label %for.body, label %for.end
52 for.body:                                         ; preds = %for.cond
53   call void @llvm.lifetime.start.p0i8(i64 8, i8* %tmp)
54   call void @hoo(i64* %a.i)
55   call void @hoo(i64* %c)
56   %tmp1 = load volatile i64, i64* %a.i, align 8
57   %call.i = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i64 %tmp1)
58   call void @llvm.lifetime.end.p0i8(i64 8, i8* %tmp)
59   %inc = add nsw i32 %i.0, 1
60   br label %for.cond
62 for.end:                                          ; preds = %for.cond
63   ret void