[LoopVectorizer] Add more testcases for PR33804.

[manojgupta]

Summary

Add test cases when float <-> pointer types conversion is triggered
in presence of load instructions.

[manojgupta]

Creating the test cases was easy when I tried again with a clean build.

[rengolin]

LGTM. Thanks!

test/CodeGen/AArch64/loopvectorize_pr33804_double.ll

for.body14.i.i:                                   ; preds = %for.body14.i.i, %entry
   %inc21.i.i = add nuw nsw i32 %i.1424.i.i, 1
   %exitcond438.i.i = icmp eq i32 %inc21.i.i, 0
   br i1 %exitcond438.i.i, label %for.end22.i.i, label %for.body14.i.i
 
 for.end22.i.i:                                    ; preds = %for.body14.i.i
   unreachable
 }
 
+; This test check for integer to pointer casting with load instructions.
+
+; CHECK-LABEL: @cvCalcEMD3
+; CHECK: vector.body
+; CHECK: inttoptr <{{[0-9]+}} x i64>
+define void @cvCalcEMD3() local_unnamed_addr #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+entry:
+  br label %for.body14.i.i
+
+for.body14.i.i:                                   ; preds = %for.body14.i.i, %entry
+  %i.1424.i.i = phi i32 [ %inc21.i.i, %for.body14.i.i ], [ 0, %entry ]
+  %arrayidx15.i.i1427 = getelementptr inbounds %struct.CvNode1D, %struct.CvNode1D* undef, i32 %i.1424.i.i
+  %val.i.i = getelementptr inbounds %struct.CvNode1D, %struct.CvNode1D* %arrayidx15.i.i1427, i32 0, i32 0
+  %load_d = load double, double* %val.i.i, align 4
+  %next19.i.i = getelementptr inbounds %struct.CvNode1D, %struct.CvNode1D* undef, i32 %i.1424.i.i, i32 1
+  %load_p = load %struct.CvNode1D*, %struct.CvNode1D** %next19.i.i, align 4
+  %inc21.i.i = add nuw nsw i32 %i.1424.i.i, 1
+  %exitcond438.i.i = icmp eq i32 %inc21.i.i, 0
+  br i1 %exitcond438.i.i, label %for.end22.i.i, label %for.body14.i.i
+
+for.end22.i.i:                                    ; preds = %for.body14.i.i
+  unreachable
+}
+
+; This test check for pointer to integer casting with load instructions.
+
+; CHECK-LABEL: @cvCalcEMD3_2
+; CHECK: vector.body
+; CHECK: ptrtoint <{{[0-9]+}} x %struct.CvNode1D2*>
+define void @cvCalcEMD3_2() local_unnamed_addr #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+entry:
+  br label %for.body14.i.i
+
+for.body14.i.i:                                   ; preds = %for.body14.i.i, %entry
+  %i.1424.i.i = phi i32 [ %inc21.i.i, %for.body14.i.i ], [ 0, %entry ]
+  %next19.i.i = getelementptr inbounds %struct.CvNode1D2, %struct.CvNode1D2* undef, i32 %i.1424.i.i, i32 0
+  %load_p = load %struct.CvNode1D2*, %struct.CvNode1D2** %next19.i.i, align 4
+  %arrayidx15.i.i1427 = getelementptr inbounds %struct.CvNode1D2, %struct.CvNode1D2* undef, i32 %i.1424.i.i
+  %val.i.i = getelementptr inbounds %struct.CvNode1D2, %struct.CvNode1D2* %arrayidx15.i.i1427, i32 0, i32 1
+  %load_d = load double, double* %val.i.i, align 4
+  %inc21.i.i = add nuw nsw i32 %i.1424.i.i, 1
+  %exitcond438.i.i = icmp eq i32 %inc21.i.i, 0
+  br i1 %exitcond438.i.i, label %for.end22.i.i, label %for.body14.i.i
+
+for.end22.i.i:                                    ; preds = %for.body14.i.i
+  unreachable
+}
+
 declare i32 @__gxx_personality_v0(...)
 
 attributes #0 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" }
 

test/CodeGen/ARM/loopvectorize_pr33804.ll

for.body14.i.i:                                   ; preds = %for.body14.i.i, %entry
   %inc21.i.i = add nuw nsw i32 %i.1424.i.i, 1
   %exitcond438.i.i = icmp eq i32 %inc21.i.i, 0
   br i1 %exitcond438.i.i, label %for.end22.i.i, label %for.body14.i.i
 
 for.end22.i.i:                                    ; preds = %for.body14.i.i
   unreachable
 }
 
+; This test checks for the intoptr conversions with load instructions.
+
+; CHECK-LABEL: @cvCalcEMD3
+; CHECK: vector.body
+; CHECK: inttoptr <{{[0-9]+}} x i32>
+define void @cvCalcEMD3() local_unnamed_addr #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+entry:
+  br label %for.body14.i.i
+
+for.body14.i.i:                                   ; preds = %for.body14.i.i, %entry
+  %i.1424.i.i = phi i32 [ %inc21.i.i, %for.body14.i.i ], [ 0, %entry ]
+  %arrayidx15.i.i1427 = getelementptr inbounds %struct.CvNode1D, %struct.CvNode1D* undef, i32 %i.1424.i.i
+  %val.i.i = getelementptr inbounds %struct.CvNode1D, %struct.CvNode1D* %arrayidx15.i.i1427, i32 0, i32 0
+  %loadf = load float, float* %val.i.i, align 4
+  %next19.i.i = getelementptr inbounds %struct.CvNode1D, %struct.CvNode1D* undef, i32 %i.1424.i.i, i32 1
+  %loadp = load %struct.CvNode1D*, %struct.CvNode1D** %next19.i.i, align 4
+  %inc21.i.i = add nuw nsw i32 %i.1424.i.i, 1
+  %exitcond438.i.i = icmp eq i32 %inc21.i.i, 0
+  br i1 %exitcond438.i.i, label %for.end22.i.i, label %for.body14.i.i
+
+for.end22.i.i:                                    ; preds = %for.body14.i.i
+  unreachable
+}
+
+; This test checks for ptrtoint conversions with load instructions.
+
+; CHECK-LABEL: @cvCalcEMD3_2
+; CHECK: vector.body
+; CHECK: ptrtoint <{{[0-9]+}} x %struct.CvNode1D2*>
+define void @cvCalcEMD3_2() local_unnamed_addr #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+entry:
+  br label %for.body14.i.i
+
+for.body14.i.i:                                   ; preds = %for.body14.i.i, %entry
+  %i.1424.i.i = phi i32 [ %inc21.i.i, %for.body14.i.i ], [ 0, %entry ]
+  %next19.i.i = getelementptr inbounds %struct.CvNode1D2, %struct.CvNode1D2* undef, i32 %i.1424.i.i, i32 0
+  %loadp = load %struct.CvNode1D2*, %struct.CvNode1D2** %next19.i.i, align 4
+  %arrayidx15.i.i1427 = getelementptr inbounds %struct.CvNode1D2, %struct.CvNode1D2* undef, i32 %i.1424.i.i
+  %val.i.i = getelementptr inbounds %struct.CvNode1D2, %struct.CvNode1D2* %arrayidx15.i.i1427, i32 0, i32 1
+  %loadf = load float, float* %val.i.i, align 4
+  %inc21.i.i = add nuw nsw i32 %i.1424.i.i, 1
+  %exitcond438.i.i = icmp eq i32 %inc21.i.i, 0
+  br i1 %exitcond438.i.i, label %for.end22.i.i, label %for.body14.i.i
+
+for.end22.i.i:                                    ; preds = %for.body14.i.i
+  unreachable
+}
+
 declare i32 @__gxx_personality_v0(...)
 
 attributes #0 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "target-features"="+dsp,+neon,+vfp3,-thumb-mode" "unsafe-fp-math"="false" "use-soft-float"="false" }