[LoopAccesses 3/3] Print the dependences with -analyze

The dependences are now expose through the new getInterestingDependences
API so we can use that with -analyze too and fix the FIXME.

This lets us remove the test that relied on -debug to check the
dependences.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231807 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 4 insertions, 66 deletions

diff --git a/test/Analysis/LoopAccessAnalysis/unsafe-and-rt-checks-no-dbg.ll b/test/Analysis/LoopAccessAnalysis/unsafe-and-rt-checks-no-dbg.ll
deleted file mode 100644
index 6770f9253a0..00000000000
--- a/test/Analysis/LoopAccessAnalysis/unsafe-and-rt-checks-no-dbg.ll
+++ /dev/null
@@ -1,60 +0,0 @@
-; RUN: opt -loop-accesses -analyze < %s | FileCheck %s
-
-; FIXME: This is the non-debug version of unsafe-and-rt-checks.ll not
-; requiring "asserts".  Once we can check memory dependences without -debug,
-; we should remove this test.
-
-; Analyze this loop:
-;   for (i = 0; i < n; i++)
-;    A[i + 1] = A[i] * B[i] * C[i];
-
-target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64-apple-macosx10.10.0"
-
-; CHECK: Report: unsafe dependent memory operations in loop
-
-; CHECK: Run-time memory checks:
-; CHECK-NEXT: 0:
-; CHECK-NEXT:   %arrayidxA_plus_2 = getelementptr inbounds i16, i16* %a, i64 %add
-; CHECK-NEXT:   %arrayidxB = getelementptr inbounds i16, i16* %b, i64 %storemerge3
-; CHECK-NEXT: 1:
-; CHECK-NEXT:   %arrayidxA_plus_2 = getelementptr inbounds i16, i16* %a, i64 %add
-; CHECK-NEXT:   %arrayidxC = getelementptr inbounds i16, i16* %c, i64 %storemerge3
-
-@n = global i32 20, align 4
-@B = common global i16* null, align 8
-@A = common global i16* null, align 8
-@C = common global i16* null, align 8
-
-define void @f() {
-entry:
-  %a = load i16*, i16** @A, align 8
-  %b = load i16*, i16** @B, align 8
-  %c = load i16*, i16** @C, align 8
-  br label %for.body
-
-for.body:                                         ; preds = %for.body, %entry
-  %storemerge3 = phi i64 [ 0, %entry ], [ %add, %for.body ]
-
-  %arrayidxA = getelementptr inbounds i16, i16* %a, i64 %storemerge3
-  %loadA = load i16, i16* %arrayidxA, align 2
-
-  %arrayidxB = getelementptr inbounds i16, i16* %b, i64 %storemerge3
-  %loadB = load i16, i16* %arrayidxB, align 2
-
-  %arrayidxC = getelementptr inbounds i16, i16* %c, i64 %storemerge3
-  %loadC = load i16, i16* %arrayidxC, align 2
-
-  %mul = mul i16 %loadB, %loadA
-  %mul1 = mul i16 %mul, %loadC
-
-  %add = add nuw nsw i64 %storemerge3, 1
-  %arrayidxA_plus_2 = getelementptr inbounds i16, i16* %a, i64 %add
-  store i16 %mul1, i16* %arrayidxA_plus_2, align 2
-
-  %exitcond = icmp eq i64 %add, 20
-  br i1 %exitcond, label %for.end, label %for.body
-
-for.end:                                          ; preds = %for.body
-  ret void
-}
diff --git a/test/Analysis/LoopAccessAnalysis/unsafe-and-rt-checks.ll b/test/Analysis/LoopAccessAnalysis/unsafe-and-rt-checks.ll
index a7a324bd9a0..a11fd7f3bff 100644
--- a/test/Analysis/LoopAccessAnalysis/unsafe-and-rt-checks.ll
+++ b/test/Analysis/LoopAccessAnalysis/unsafe-and-rt-checks.ll
@@ -1,6 +1,4 @@
 ; RUN: opt -loop-accesses -analyze < %s | FileCheck %s
-; RUN: opt -loop-accesses -analyze -debug-only=loop-accesses < %s 2>&1 | FileCheck %s --check-prefix=DEBUG
-; REQUIRES: asserts
 
 ; Analyze this loop:
 ;   for (i = 0; i < n; i++)
@@ -10,10 +8,10 @@ target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-apple-macosx10.10.0"
 
 ; CHECK: Report: unsafe dependent memory operations in loop
-
-; DEBUG: LAA: Distance for   %loadA = load i16, i16* %arrayidxA, align 2 to   store i16 %mul1, i16* %arrayidxA_plus_2, align 2: 2
-; DEBUG-NEXT: LAA: Failure because of Positive distance 2
-
+; CHECK-NEXT: Interesting Dependences:
+; CHECK-NEXT:   Backward:
+; CHECK-NEXT:     %loadA = load i16, i16* %arrayidxA, align 2 ->
+; CHECK-NEXT:     store i16 %mul1, i16* %arrayidxA_plus_2, align 2
 ; CHECK: Run-time memory checks:
 ; CHECK-NEXT: 0:
 ; CHECK-NEXT:   %arrayidxA_plus_2 = getelementptr inbounds i16, i16* %a, i64 %add