mirror of
https://github.com/RPCSX/llvm.git
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65696f40e4
The code have been developed by Daniel Berlin over the years, and the new implementation goal is that of addressing shortcomings of the current GVN infrastructure, i.e. long compile time for large testcases, lack of phi predication, no load/store value numbering etc... The current code just implements the "core" GVN algorithm, although other pieces (load coercion, phi handling, predicate system) are already implemented in a branch out of tree. Once the core is stable, we'll start adding pieces on top of the base framework. The test currently living in test/Transform/NewGVN are a copy of the ones in GVN, with proper `XFAIL` (missing features in NewGVN). A flag will be added in a future commit to enable NewGVN, so that interested parties can exercise this code easily. Differential Revision: https://reviews.llvm.org/D26224 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@290346 91177308-0d34-0410-b5e6-96231b3b80d8
113 lines
7.1 KiB
LLVM
113 lines
7.1 KiB
LLVM
; XFAIL: *
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; REQUIRES: asserts
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; RUN: opt < %s -basicaa -newgvn -stats -disable-output 2>&1 | FileCheck %s
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; rdar://7363102
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; CHECK: Number of loads deleted
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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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