110 lines
7.1 KiB
LLVM
110 lines
7.1 KiB
LLVM
; REQUIRES: asserts
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; RUN: opt < %s -basicaa -gvn -stats -disable-output 2>&1 | grep "Number of loads deleted"
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; rdar://7363102
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; GVN should be able to eliminate load %tmp22.i, because it is redundant with
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; load %tmp8.i. This requires being able to prove that %tmp7.i doesn't
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; alias the malloc'd value %tmp.i20.i.i, which it can do since %tmp7.i
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; is derived from %tmp5.i which is computed from a load, and %tmp.i20.i.i
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; is never stored and does not escape.
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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"
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target triple = "x86_64-apple-darwin10.0"
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%"struct.llvm::MallocAllocator" = type <{ i8 }>
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%"struct.llvm::StringMap<void*,llvm::MallocAllocator>" = type { %"struct.llvm::StringMapImpl", %"struct.llvm::MallocAllocator" }
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%"struct.llvm::StringMapEntry<void*>" = type { %"struct.llvm::StringMapEntryBase", i8* }
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%"struct.llvm::StringMapEntryBase" = type { i32 }
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%"struct.llvm::StringMapImpl" = type { %"struct.llvm::StringMapImpl::ItemBucket"*, i32, i32, i32, i32 }
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%"struct.llvm::StringMapImpl::ItemBucket" = type { i32, %"struct.llvm::StringMapEntryBase"* }
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%"struct.llvm::StringRef" = type { i8*, i64 }
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define %"struct.llvm::StringMapEntry<void*>"* @_Z3fooRN4llvm9StringMapIPvNS_15MallocAllocatorEEEPKc(%"struct.llvm::StringMap<void*,llvm::MallocAllocator>"* %X, i8* %P) ssp {
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entry:
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%tmp = alloca %"struct.llvm::StringRef", align 8
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%tmp.i = getelementptr inbounds %"struct.llvm::StringRef", %"struct.llvm::StringRef"* %tmp, i64 0, i32 0
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store i8* %P, i8** %tmp.i, align 8
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%tmp1.i = call i64 @strlen(i8* %P) nounwind readonly
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%tmp2.i = getelementptr inbounds %"struct.llvm::StringRef", %"struct.llvm::StringRef"* %tmp, i64 0, i32 1
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store i64 %tmp1.i, i64* %tmp2.i, align 8
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%tmp1 = call %"struct.llvm::StringMapEntry<void*>"* @_ZN4llvm9StringMapIPvNS_15MallocAllocatorEE16GetOrCreateValueERKNS_9StringRefE(%"struct.llvm::StringMap<void*,llvm::MallocAllocator>"* %X, %"struct.llvm::StringRef"* %tmp) ssp
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ret %"struct.llvm::StringMapEntry<void*>"* %tmp1
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}
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declare i64 @strlen(i8* nocapture) nounwind readonly
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declare noalias i8* @malloc(i64) nounwind
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declare i32 @_ZN4llvm13StringMapImpl15LookupBucketForENS_9StringRefE(%"struct.llvm::StringMapImpl"*, i64, i64)
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define linkonce_odr %"struct.llvm::StringMapEntry<void*>"* @_ZN4llvm9StringMapIPvNS_15MallocAllocatorEE16GetOrCreateValueERKNS_9StringRefE(%"struct.llvm::StringMap<void*,llvm::MallocAllocator>"* %this, %"struct.llvm::StringRef"* nocapture %Key) ssp align 2 {
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entry:
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%elt = bitcast %"struct.llvm::StringRef"* %Key to i64*
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%val = load i64, i64* %elt
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%tmp = getelementptr inbounds %"struct.llvm::StringRef", %"struct.llvm::StringRef"* %Key, i64 0, i32 1
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%val2 = load i64, i64* %tmp
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%tmp2.i = getelementptr inbounds %"struct.llvm::StringMap<void*,llvm::MallocAllocator>", %"struct.llvm::StringMap<void*,llvm::MallocAllocator>"* %this, i64 0, i32 0
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%tmp3.i = tail call i32 @_ZN4llvm13StringMapImpl15LookupBucketForENS_9StringRefE(%"struct.llvm::StringMapImpl"* %tmp2.i, i64 %val, i64 %val2)
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%tmp4.i = getelementptr inbounds %"struct.llvm::StringMap<void*,llvm::MallocAllocator>", %"struct.llvm::StringMap<void*,llvm::MallocAllocator>"* %this, i64 0, i32 0, i32 0
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%tmp5.i = load %"struct.llvm::StringMapImpl::ItemBucket"*, %"struct.llvm::StringMapImpl::ItemBucket"** %tmp4.i, align 8
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%tmp6.i = zext i32 %tmp3.i to i64
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%tmp7.i = getelementptr inbounds %"struct.llvm::StringMapImpl::ItemBucket", %"struct.llvm::StringMapImpl::ItemBucket"* %tmp5.i, i64 %tmp6.i, i32 1
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%tmp8.i = load %"struct.llvm::StringMapEntryBase"*, %"struct.llvm::StringMapEntryBase"** %tmp7.i, align 8
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%tmp9.i = icmp eq %"struct.llvm::StringMapEntryBase"* %tmp8.i, null
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%tmp13.i = icmp eq %"struct.llvm::StringMapEntryBase"* %tmp8.i, inttoptr (i64 -1 to %"struct.llvm::StringMapEntryBase"*)
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%or.cond.i = or i1 %tmp9.i, %tmp13.i
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br i1 %or.cond.i, label %bb4.i, label %bb6.i
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bb4.i: ; preds = %entry
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%tmp41.i = inttoptr i64 %val to i8*
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%tmp4.i35.i = getelementptr inbounds i8, i8* %tmp41.i, i64 %val2
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%tmp.i.i = ptrtoint i8* %tmp4.i35.i to i64
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%tmp1.i.i = trunc i64 %tmp.i.i to i32
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%tmp3.i.i = trunc i64 %val to i32
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%tmp4.i.i = sub i32 %tmp1.i.i, %tmp3.i.i
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%tmp5.i.i = add i32 %tmp4.i.i, 17
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%tmp8.i.i = zext i32 %tmp5.i.i to i64
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%tmp.i20.i.i = tail call noalias i8* @malloc(i64 %tmp8.i.i) nounwind
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%tmp10.i.i = bitcast i8* %tmp.i20.i.i to %"struct.llvm::StringMapEntry<void*>"*
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%tmp12.i.i = icmp eq i8* %tmp.i20.i.i, null
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br i1 %tmp12.i.i, label %_ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i, label %bb.i.i
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bb.i.i: ; preds = %bb4.i
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%tmp.i.i.i.i = bitcast i8* %tmp.i20.i.i to i32*
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store i32 %tmp4.i.i, i32* %tmp.i.i.i.i, align 4
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%tmp1.i19.i.i = getelementptr inbounds i8, i8* %tmp.i20.i.i, i64 8
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%0 = bitcast i8* %tmp1.i19.i.i to i8**
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store i8* null, i8** %0, align 8
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br label %_ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i
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_ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i: ; preds = %bb.i.i, %bb4.i
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%tmp.i18.i.i = getelementptr inbounds i8, i8* %tmp.i20.i.i, i64 16
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%tmp15.i.i = zext i32 %tmp4.i.i to i64
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tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp.i18.i.i, i8* %tmp41.i, i64 %tmp15.i.i, i32 1, i1 false)
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%tmp.i18.sum.i.i = add i64 %tmp15.i.i, 16
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%tmp17.i.i = getelementptr inbounds i8, i8* %tmp.i20.i.i, i64 %tmp.i18.sum.i.i
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store i8 0, i8* %tmp17.i.i, align 1
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%tmp.i.i.i = getelementptr inbounds i8, i8* %tmp.i20.i.i, i64 8
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%1 = bitcast i8* %tmp.i.i.i to i8**
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store i8* null, i8** %1, align 8
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%tmp22.i = load %"struct.llvm::StringMapEntryBase"*, %"struct.llvm::StringMapEntryBase"** %tmp7.i, align 8
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%tmp24.i = icmp eq %"struct.llvm::StringMapEntryBase"* %tmp22.i, inttoptr (i64 -1 to %"struct.llvm::StringMapEntryBase"*)
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br i1 %tmp24.i, label %bb9.i, label %_ZN4llvm9StringMapIPvNS_15MallocAllocatorEE16GetOrCreateValueIS1_EERNS_14StringMapEntryIS1_EENS_9StringRefET_.exit
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bb6.i: ; preds = %entry
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%tmp16.i = bitcast %"struct.llvm::StringMapEntryBase"* %tmp8.i to %"struct.llvm::StringMapEntry<void*>"*
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ret %"struct.llvm::StringMapEntry<void*>"* %tmp16.i
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bb9.i: ; preds = %_ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i
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%tmp25.i = getelementptr inbounds %"struct.llvm::StringMap<void*,llvm::MallocAllocator>", %"struct.llvm::StringMap<void*,llvm::MallocAllocator>"* %this, i64 0, i32 0, i32 3
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%tmp26.i = load i32, i32* %tmp25.i, align 8
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%tmp27.i = add i32 %tmp26.i, -1
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store i32 %tmp27.i, i32* %tmp25.i, align 8
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ret %"struct.llvm::StringMapEntry<void*>"* %tmp10.i.i
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_ZN4llvm9StringMapIPvNS_15MallocAllocatorEE16GetOrCreateValueIS1_EERNS_14StringMapEntryIS1_EENS_9StringRefET_.exit: ; preds = %_ZN4llvm14StringMapEntryIPvE6CreateINS_15MallocAllocatorES1_EEPS2_PKcS7_RT_T0_.exit.i
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ret %"struct.llvm::StringMapEntry<void*>"* %tmp10.i.i
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}
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
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