1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -passes=newgvn -S | FileCheck %s
3 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
5 @global = common global [1024 x i32] zeroinitializer, align 16
7 ;; We should be able to prove the equivalence of two of the phis, and then use that to eliminate
8 ;; one set of indexing calculations and a load
10 ; Function Attrs: nounwind ssp uwtable
11 define i32 @bar(i32 %arg, i32 %arg1, i32 %arg2) #0 {
14 ; CHECK-NEXT: br label %bb3
16 ; CHECK-NEXT: [[TMP:%.*]] = phi i32 [ %arg, %bb ], [ [[TMP:%.*]]15, %bb17 ]
17 ; CHECK-NEXT: [[TMP4:%.*]] = phi i32 [ %arg2, %bb ], [ [[TMP18:%.*]], %bb17 ]
18 ; CHECK-NEXT: [[TMP6:%.*]] = phi i32 [ 0, %bb ], [ [[TMP14:%.*]], %bb17 ]
19 ; CHECK-NEXT: [[TMP7:%.*]] = sext i32 [[TMP]] to i64
20 ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds [1024 x i32], [1024 x i32]* @global, i64 0, i64 [[TMP7]]
21 ; CHECK-NEXT: [[TMP9:%.*]] = load i32, i32* [[TMP8]], align 4
22 ; CHECK-NEXT: [[TMP10:%.*]] = add nsw i32 [[TMP6]], [[TMP9]]
23 ; CHECK-NEXT: [[TMP14]] = add nsw i32 [[TMP10]], [[TMP9]]
24 ; CHECK-NEXT: [[TMP15:%.*]] = add nsw i32 [[TMP]], %arg1
25 ; CHECK-NEXT: br label %bb17
27 ; CHECK-NEXT: [[TMP18]] = add i32 [[TMP4]], -1
28 ; CHECK-NEXT: [[TMP19:%.*]] = icmp ne i32 [[TMP4]], 0
29 ; CHECK-NEXT: br i1 [[TMP19]], label %bb3, label %bb20
31 ; CHECK-NEXT: ret i32 [[TMP14]]
36 bb3: ; preds = %bb17, %bb
37 %tmp = phi i32 [ %arg, %bb ], [ %tmp15, %bb17 ]
38 %tmp4 = phi i32 [ %arg2, %bb ], [ %tmp18, %bb17 ]
39 %tmp5 = phi i32 [ %arg, %bb ], [ %tmp16, %bb17 ]
40 %tmp6 = phi i32 [ 0, %bb ], [ %tmp14, %bb17 ]
41 %tmp7 = sext i32 %tmp to i64
42 %tmp8 = getelementptr inbounds [1024 x i32], [1024 x i32]* @global, i64 0, i64 %tmp7
43 %tmp9 = load i32, i32* %tmp8, align 4
44 %tmp10 = add nsw i32 %tmp6, %tmp9
45 %tmp11 = sext i32 %tmp5 to i64
46 %tmp12 = getelementptr inbounds [1024 x i32], [1024 x i32]* @global, i64 0, i64 %tmp11
47 %tmp13 = load i32, i32* %tmp12, align 4
48 %tmp14 = add nsw i32 %tmp10, %tmp13
49 %tmp15 = add nsw i32 %tmp, %arg1
50 %tmp16 = add nsw i32 %tmp5, %arg1
54 %tmp18 = add i32 %tmp4, -1
55 %tmp19 = icmp ne i32 %tmp4, 0
56 br i1 %tmp19, label %bb3, label %bb20
62 attributes #0 = { nounwind ssp uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="penryn" "target-features"="+cx16,+fxsr,+mmx,+sse,+sse2,+sse3,+sse4.1,+ssse3" "unsafe-fp-math"="false" "use-soft-float"="false" }
64 !llvm.module.flags = !{!0}
67 !0 = !{i32 1, !"PIC Level", i32 2}
68 !1 = !{!"Apple LLVM version 8.0.0 (clang-800.0.42.1)"}