3 ; RUN: opt < %s -passes=newgvn -stats -disable-output 2>&1 | FileCheck %s
6 ; CHECK: Number of loads deleted
8 ; GVN should be able to eliminate load %tmp22.i, because it is redundant with
9 ; load %tmp8.i. This requires being able to prove that %tmp7.i doesn't
10 ; alias the malloc'd value %tmp.i20.i.i, which it can do since %tmp7.i
11 ; is derived from %tmp5.i which is computed from a load, and %tmp.i20.i.i
12 ; is never stored and does not escape.
14 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
15 target triple = "x86_64-apple-darwin10.0"
17 %"struct.llvm::MallocAllocator" = type <{ i8 }>
18 %"struct.llvm::StringMap<ptr,llvm::MallocAllocator>" = type { %"struct.llvm::StringMapImpl", %"struct.llvm::MallocAllocator" }
19 %"struct.llvm::StringMapEntry<ptr>" = type { %"struct.llvm::StringMapEntryBase", ptr }
20 %"struct.llvm::StringMapEntryBase" = type { i32 }
21 %"struct.llvm::StringMapImpl" = type { ptr, i32, i32, i32, i32 }
22 %"struct.llvm::StringMapImpl::ItemBucket" = type { i32, ptr }
23 %"struct.llvm::StringRef" = type { ptr, i64 }
25 define ptr @_Z3fooRN4llvm9StringMapIPvNS_15MallocAllocatorEEEPKc(ptr %X, ptr %P) ssp {
27 %tmp = alloca %"struct.llvm::StringRef", align 8
28 store ptr %P, ptr %tmp, align 8
29 %tmp1.i = call i64 @strlen(ptr %P) nounwind readonly
30 %tmp2.i = getelementptr inbounds %"struct.llvm::StringRef", ptr %tmp, i64 0, i32 1
31 store i64 %tmp1.i, ptr %tmp2.i, align 8
32 %tmp1 = call ptr @_ZN4llvm9StringMapIPvNS_15MallocAllocatorEE16GetOrCreateValueERKNS_9StringRefE(ptr %X, ptr %tmp) ssp
36 declare i64 @strlen(ptr nocapture) nounwind readonly
38 declare noalias ptr @malloc(i64) nounwind
40 declare i32 @_ZN4llvm13StringMapImpl15LookupBucketForENS_9StringRefE(ptr, i64, i64)
42 define linkonce_odr ptr @_ZN4llvm9StringMapIPvNS_15MallocAllocatorEE16GetOrCreateValueERKNS_9StringRefE(ptr %this, ptr nocapture %Key) ssp align 2 {
44 %val = load i64, ptr %Key
45 %tmp = getelementptr inbounds %"struct.llvm::StringRef", ptr %Key, i64 0, i32 1
46 %val2 = load i64, ptr %tmp
47 %tmp2.i = getelementptr inbounds %"struct.llvm::StringMap<ptr,llvm::MallocAllocator>", ptr %this, i64 0, i32 0
48 %tmp3.i = tail call i32 @_ZN4llvm13StringMapImpl15LookupBucketForENS_9StringRefE(ptr %tmp2.i, i64 %val, i64 %val2)
49 %tmp4.i = getelementptr inbounds %"struct.llvm::StringMap<ptr,llvm::MallocAllocator>", ptr %this, i64 0, i32 0, i32 0
50 %tmp5.i = load ptr, ptr %tmp4.i, align 8
51 %tmp6.i = zext i32 %tmp3.i to i64
52 %tmp7.i = getelementptr inbounds %"struct.llvm::StringMapImpl::ItemBucket", ptr %tmp5.i, i64 %tmp6.i, i32 1
53 %tmp8.i = load ptr, ptr %tmp7.i, align 8
54 %tmp9.i = icmp eq ptr %tmp8.i, null
55 %tmp13.i = icmp eq ptr %tmp8.i, inttoptr (i64 -1 to ptr)
56 %or.cond.i = or i1 %tmp9.i, %tmp13.i
57 br i1 %or.cond.i, label %bb4.i, label %bb6.i
59 bb4.i: ; preds = %entry
60 %tmp41.i = inttoptr i64 %val to ptr
61 %tmp4.i35.i = getelementptr inbounds i8, ptr %tmp41.i, i64 %val2
62 %tmp.i.i = ptrtoint ptr %tmp4.i35.i to i64
63 %tmp1.i.i = trunc i64 %tmp.i.i to i32
64 %tmp3.i.i = trunc i64 %val to i32
65 %tmp4.i.i = sub i32 %tmp1.i.i, %tmp3.i.i
66 %tmp5.i.i = add i32 %tmp4.i.i, 17
67 %tmp8.i.i = zext i32 %tmp5.i.i to i64
68 %tmp.i20.i.i = tail call noalias ptr @malloc(i64 %tmp8.i.i) nounwind
69 %tmp12.i.i = icmp eq ptr %tmp.i20.i.i, null
70 br i1 %tmp12.i.i, label %_ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i, label %bb.i.i
72 bb.i.i: ; preds = %bb4.i
73 store i32 %tmp4.i.i, ptr %tmp.i20.i.i, align 4
74 %tmp1.i19.i.i = getelementptr inbounds i8, ptr %tmp.i20.i.i, i64 8
75 store ptr null, ptr %tmp1.i19.i.i, align 8
76 br label %_ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i
78 _ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i: ; preds = %bb.i.i, %bb4.i
79 %tmp.i18.i.i = getelementptr inbounds i8, ptr %tmp.i20.i.i, i64 16
80 %tmp15.i.i = zext i32 %tmp4.i.i to i64
81 tail call void @llvm.memcpy.p0.p0.i64(ptr %tmp.i18.i.i, ptr %tmp41.i, i64 %tmp15.i.i, i1 false)
82 %tmp.i18.sum.i.i = add i64 %tmp15.i.i, 16
83 %tmp17.i.i = getelementptr inbounds i8, ptr %tmp.i20.i.i, i64 %tmp.i18.sum.i.i
84 store i8 0, ptr %tmp17.i.i, align 1
85 %tmp.i.i.i = getelementptr inbounds i8, ptr %tmp.i20.i.i, i64 8
86 store ptr null, ptr %tmp.i.i.i, align 8
87 %tmp22.i = load ptr, ptr %tmp7.i, align 8
88 %tmp24.i = icmp eq ptr %tmp22.i, inttoptr (i64 -1 to ptr)
89 br i1 %tmp24.i, label %bb9.i, label %_ZN4llvm9StringMapIPvNS_15MallocAllocatorEE16GetOrCreateValueIS1_EERNS_14StringMapEntryIS1_EENS_9StringRefET_.exit
91 bb6.i: ; preds = %entry
94 bb9.i: ; preds = %_ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i
95 %tmp25.i = getelementptr inbounds %"struct.llvm::StringMap<ptr,llvm::MallocAllocator>", ptr %this, i64 0, i32 0, i32 3
96 %tmp26.i = load i32, ptr %tmp25.i, align 8
97 %tmp27.i = add i32 %tmp26.i, -1
98 store i32 %tmp27.i, ptr %tmp25.i, align 8
101 _ZN4llvm9StringMapIPvNS_15MallocAllocatorEE16GetOrCreateValueIS1_EERNS_14StringMapEntryIS1_EENS_9StringRefET_.exit: ; preds = %_ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i
105 declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) nounwind