[llvm] r267182 - [LoopVersioningLICM] Add test coverage for llvm.loop.licm_versioning.disable

[Adam Nemet via llvm-commits]

Author: anemet
Date: Fri Apr 22 13:34:50 2016
New Revision: 267182

URL: http://llvm.org/viewvc/llvm-project?rev=267182&view=rev
Log:
[LoopVersioningLICM] Add test coverage for llvm.loop.licm_versioning.disable

In the next change, I am generalizing the function
findStringMetadataForLoop and I want to make sure I don't break this.
Looks like there was no coverage for this so far.

Added:
    llvm/trunk/test/Transforms/LoopVersioningLICM/metadata.ll

Added: llvm/trunk/test/Transforms/LoopVersioningLICM/metadata.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/LoopVersioningLICM/metadata.ll?rev=267182&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/LoopVersioningLICM/metadata.ll (added)
+++ llvm/trunk/test/Transforms/LoopVersioningLICM/metadata.ll Fri Apr 22 13:34:50 2016
@@ -0,0 +1,104 @@
+; RUN: opt < %s  -O1  -S -loop-versioning-licm -licm 2>&1 | FileCheck %s
+
+; CHECK-LABEL: @without_metadata(
+define i32 @without_metadata(i32* nocapture %var1, i32* nocapture readnone %var2, i32* nocapture %var3, i32 %itr) #0 {
+entry:
+  %cmp14 = icmp eq i32 %itr, 0
+  br i1 %cmp14, label %for.end13, label %for.cond1.preheader.preheader
+
+for.cond1.preheader.preheader:                    ; preds = %entry
+  br label %for.cond1.preheader
+
+for.cond1.preheader:                              ; preds = %for.cond1.preheader.preheader, %for.inc11
+  %j.016 = phi i32 [ %j.1.lcssa, %for.inc11 ], [ 0, %for.cond1.preheader.preheader ]
+  %i.015 = phi i32 [ %inc12, %for.inc11 ], [ 0, %for.cond1.preheader.preheader ]
+  %cmp212 = icmp ult i32 %j.016, %itr
+  br i1 %cmp212, label %for.body3.lr.ph, label %for.inc11
+
+for.body3.lr.ph:                                  ; preds = %for.cond1.preheader
+  %add = add i32 %i.015, %itr
+  %idxprom6 = zext i32 %i.015 to i64
+  %arrayidx7 = getelementptr inbounds i32, i32* %var3, i64 %idxprom6
+  br label %for.body3
+
+for.body3:                                        ; preds = %for.body3.lr.ph, %for.body3
+  %j.113 = phi i32 [ %j.016, %for.body3.lr.ph ], [ %inc, %for.body3 ]
+  %idxprom = zext i32 %j.113 to i64
+  %arrayidx = getelementptr inbounds i32, i32* %var1, i64 %idxprom
+; CHECK: store i32 %add, i32* %arrayidx, align 4, !alias.scope {{.*}}, !noalias {{.*}}
+  store i32 %add, i32* %arrayidx, align 4
+  %0 = load i32, i32* %arrayidx7, align 4
+  %add8 = add nsw i32 %0, %add
+  store i32 %add8, i32* %arrayidx7, align 4
+  %inc = add nuw i32 %j.113, 1
+  %cmp2 = icmp ult i32 %inc, %itr
+  br i1 %cmp2, label %for.body3, label %for.inc11.loopexit
+
+for.inc11.loopexit:                               ; preds = %for.body3
+  br label %for.inc11
+
+for.inc11:                                        ; preds = %for.inc11.loopexit, %for.cond1.preheader
+  %j.1.lcssa = phi i32 [ %j.016, %for.cond1.preheader ], [ %itr, %for.inc11.loopexit ]
+  %inc12 = add nuw i32 %i.015, 1
+  %cmp = icmp ult i32 %inc12, %itr
+  br i1 %cmp, label %for.cond1.preheader, label %for.end13.loopexit
+
+for.end13.loopexit:                               ; preds = %for.inc11
+  br label %for.end13
+
+for.end13:                                        ; preds = %for.end13.loopexit, %entry
+  ret i32 0
+}
+
+; CHECK-LABEL: @with_metadata(
+define i32 @with_metadata(i32* nocapture %var1, i32* nocapture readnone %var2, i32* nocapture %var3, i32 %itr) #0 {
+entry:
+  %cmp14 = icmp eq i32 %itr, 0
+  br i1 %cmp14, label %for.end13, label %for.cond1.preheader.preheader
+
+for.cond1.preheader.preheader:                    ; preds = %entry
+  br label %for.cond1.preheader
+
+for.cond1.preheader:                              ; preds = %for.cond1.preheader.preheader, %for.inc11
+  %j.016 = phi i32 [ %j.1.lcssa, %for.inc11 ], [ 0, %for.cond1.preheader.preheader ]
+  %i.015 = phi i32 [ %inc12, %for.inc11 ], [ 0, %for.cond1.preheader.preheader ]
+  %cmp212 = icmp ult i32 %j.016, %itr
+  br i1 %cmp212, label %for.body3.lr.ph, label %for.inc11
+
+for.body3.lr.ph:                                  ; preds = %for.cond1.preheader
+  %add = add i32 %i.015, %itr
+  %idxprom6 = zext i32 %i.015 to i64
+  %arrayidx7 = getelementptr inbounds i32, i32* %var3, i64 %idxprom6
+  br label %for.body3
+
+for.body3:                                        ; preds = %for.body3.lr.ph, %for.body3
+  %j.113 = phi i32 [ %j.016, %for.body3.lr.ph ], [ %inc, %for.body3 ]
+  %idxprom = zext i32 %j.113 to i64
+  %arrayidx = getelementptr inbounds i32, i32* %var1, i64 %idxprom
+; CHECK-NOT: store i32 %add, i32* %arrayidx, align 4, !alias.scope {{.*}}, !noalias {{.*}}
+  store i32 %add, i32* %arrayidx, align 4
+  %0 = load i32, i32* %arrayidx7, align 4
+  %add8 = add nsw i32 %0, %add
+  store i32 %add8, i32* %arrayidx7, align 4
+  %inc = add nuw i32 %j.113, 1
+  %cmp2 = icmp ult i32 %inc, %itr
+  br i1 %cmp2, label %for.body3, label %for.inc11.loopexit, !llvm.loop !0
+
+for.inc11.loopexit:                               ; preds = %for.body3
+  br label %for.inc11
+
+for.inc11:                                        ; preds = %for.inc11.loopexit, %for.cond1.preheader
+  %j.1.lcssa = phi i32 [ %j.016, %for.cond1.preheader ], [ %itr, %for.inc11.loopexit ]
+  %inc12 = add nuw i32 %i.015, 1
+  %cmp = icmp ult i32 %inc12, %itr
+  br i1 %cmp, label %for.cond1.preheader, label %for.end13.loopexit
+
+for.end13.loopexit:                               ; preds = %for.inc11
+  br label %for.end13
+
+for.end13:                                        ; preds = %for.end13.loopexit, %entry
+  ret i32 0
+}
+
+!0 = distinct !{!0, !1}
+!1 = !{!"llvm.loop.licm_versioning.disable"}