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1; XFAIL: *2; REQUIRES: asserts3; RUN: opt < %s -passes=newgvn -stats -disable-output 2>&1 | FileCheck %s4; rdar://73631025 6; CHECK: Number of loads deleted7 8; GVN should be able to eliminate load %tmp22.i, because it is redundant with9; load %tmp8.i. This requires being able to prove that %tmp7.i doesn't10; alias the malloc'd value %tmp.i20.i.i, which it can do since %tmp7.i11; is derived from %tmp5.i which is computed from a load, and %tmp.i20.i.i12; is never stored and does not escape.13 14target 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"15target triple = "x86_64-apple-darwin10.0"16 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 }24 25define ptr @_Z3fooRN4llvm9StringMapIPvNS_15MallocAllocatorEEEPKc(ptr %X, ptr %P) ssp {26entry:27 %tmp = alloca %"struct.llvm::StringRef", align 828 store ptr %P, ptr %tmp, align 829 %tmp1.i = call i64 @strlen(ptr %P) nounwind readonly30 %tmp2.i = getelementptr inbounds %"struct.llvm::StringRef", ptr %tmp, i64 0, i32 131 store i64 %tmp1.i, ptr %tmp2.i, align 832 %tmp1 = call ptr @_ZN4llvm9StringMapIPvNS_15MallocAllocatorEE16GetOrCreateValueERKNS_9StringRefE(ptr %X, ptr %tmp) ssp33 ret ptr %tmp134}35 36declare i64 @strlen(ptr nocapture) nounwind readonly37 38declare noalias ptr @malloc(i64) nounwind39 40declare i32 @_ZN4llvm13StringMapImpl15LookupBucketForENS_9StringRefE(ptr, i64, i64)41 42define linkonce_odr ptr @_ZN4llvm9StringMapIPvNS_15MallocAllocatorEE16GetOrCreateValueERKNS_9StringRefE(ptr %this, ptr nocapture %Key) ssp align 2 {43entry:44 %val = load i64, ptr %Key45 %tmp = getelementptr inbounds %"struct.llvm::StringRef", ptr %Key, i64 0, i32 146 %val2 = load i64, ptr %tmp47 %tmp2.i = getelementptr inbounds %"struct.llvm::StringMap<ptr,llvm::MallocAllocator>", ptr %this, i64 0, i32 048 %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 050 %tmp5.i = load ptr, ptr %tmp4.i, align 851 %tmp6.i = zext i32 %tmp3.i to i6452 %tmp7.i = getelementptr inbounds %"struct.llvm::StringMapImpl::ItemBucket", ptr %tmp5.i, i64 %tmp6.i, i32 153 %tmp8.i = load ptr, ptr %tmp7.i, align 854 %tmp9.i = icmp eq ptr %tmp8.i, null55 %tmp13.i = icmp eq ptr %tmp8.i, inttoptr (i64 -1 to ptr)56 %or.cond.i = or i1 %tmp9.i, %tmp13.i57 br i1 %or.cond.i, label %bb4.i, label %bb6.i58 59bb4.i: ; preds = %entry60 %tmp41.i = inttoptr i64 %val to ptr61 %tmp4.i35.i = getelementptr inbounds i8, ptr %tmp41.i, i64 %val262 %tmp.i.i = ptrtoint ptr %tmp4.i35.i to i6463 %tmp1.i.i = trunc i64 %tmp.i.i to i3264 %tmp3.i.i = trunc i64 %val to i3265 %tmp4.i.i = sub i32 %tmp1.i.i, %tmp3.i.i66 %tmp5.i.i = add i32 %tmp4.i.i, 1767 %tmp8.i.i = zext i32 %tmp5.i.i to i6468 %tmp.i20.i.i = tail call noalias ptr @malloc(i64 %tmp8.i.i) nounwind69 %tmp12.i.i = icmp eq ptr %tmp.i20.i.i, null70 br i1 %tmp12.i.i, label %_ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i, label %bb.i.i71 72bb.i.i: ; preds = %bb4.i73 store i32 %tmp4.i.i, ptr %tmp.i20.i.i, align 474 %tmp1.i19.i.i = getelementptr inbounds i8, ptr %tmp.i20.i.i, i64 875 store ptr null, ptr %tmp1.i19.i.i, align 876 br label %_ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i77 78_ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i: ; preds = %bb.i.i, %bb4.i79 %tmp.i18.i.i = getelementptr inbounds i8, ptr %tmp.i20.i.i, i64 1680 %tmp15.i.i = zext i32 %tmp4.i.i to i6481 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, 1683 %tmp17.i.i = getelementptr inbounds i8, ptr %tmp.i20.i.i, i64 %tmp.i18.sum.i.i84 store i8 0, ptr %tmp17.i.i, align 185 %tmp.i.i.i = getelementptr inbounds i8, ptr %tmp.i20.i.i, i64 886 store ptr null, ptr %tmp.i.i.i, align 887 %tmp22.i = load ptr, ptr %tmp7.i, align 888 %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_.exit90 91bb6.i: ; preds = %entry92 ret ptr %tmp8.i93 94bb9.i: ; preds = %_ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i95 %tmp25.i = getelementptr inbounds %"struct.llvm::StringMap<ptr,llvm::MallocAllocator>", ptr %this, i64 0, i32 0, i32 396 %tmp26.i = load i32, ptr %tmp25.i, align 897 %tmp27.i = add i32 %tmp26.i, -198 store i32 %tmp27.i, ptr %tmp25.i, align 899 ret ptr %tmp.i20.i.i100 101_ZN4llvm9StringMapIPvNS_15MallocAllocatorEE16GetOrCreateValueIS1_EERNS_14StringMapEntryIS1_EENS_9StringRefET_.exit: ; preds = %_ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i102 ret ptr %tmp.i20.i.i103}104 105declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) nounwind106