[llvm] r324039 - SplitKit: Fix liveness recomputation in some remat cases.
Matthias Braun via llvm-commits
llvm-commits at lists.llvm.org
Thu Feb 1 16:08:19 PST 2018
Author: matze
Date: Thu Feb 1 16:08:19 2018
New Revision: 324039
URL: http://llvm.org/viewvc/llvm-project?rev=324039&view=rev
Log:
SplitKit: Fix liveness recomputation in some remat cases.
Example situation:
```
BB0:
%0 = ...
use %0
; ...
condjump BB1
jmp BB2
BB1:
%0 = ... ; rematerialized def from above (from earlier split step)
jmp BB2
BB2:
; ...
use %0
```
%0 will have a live interval with 3 value numbers (for the BB0, BB1 and
BB2 parts). Now SplitKit tries and succeeds in rematerializing the value
number in BB2 (This only works because it is a secondary split so
SplitKit is can trace this back to a single original def).
We need to recompute all live ranges affected by a value number that we
rematerialize. The case that we missed before is that when the value
that is rematerialized is at a join (Phi VNI) then we also have to
recompute liveness for the predecessor VNIs.
rdar://35699130
Differential Revision: https://reviews.llvm.org/D42667
Added:
llvm/trunk/test/CodeGen/ARM/splitkit.ll
Modified:
llvm/trunk/lib/CodeGen/SplitKit.cpp
llvm/trunk/lib/CodeGen/SplitKit.h
Modified: llvm/trunk/lib/CodeGen/SplitKit.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SplitKit.cpp?rev=324039&r1=324038&r2=324039&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SplitKit.cpp (original)
+++ llvm/trunk/lib/CodeGen/SplitKit.cpp Thu Feb 1 16:08:19 2018
@@ -491,9 +491,8 @@ VNInfo *SplitEditor::defValue(unsigned R
return VNI;
}
-void SplitEditor::forceRecompute(unsigned RegIdx, const VNInfo *ParentVNI) {
- assert(ParentVNI && "Mapping NULL value");
- ValueForcePair &VFP = Values[std::make_pair(RegIdx, ParentVNI->id)];
+void SplitEditor::forceRecompute(unsigned RegIdx, const VNInfo &ParentVNI) {
+ ValueForcePair &VFP = Values[std::make_pair(RegIdx, ParentVNI.id)];
VNInfo *VNI = VFP.getPointer();
// ParentVNI was either unmapped or already complex mapped. Either way, just
@@ -777,7 +776,7 @@ SlotIndex SplitEditor::leaveIntvAfter(Sl
// the source live range. The spiller also won't try to hoist this copy.
if (SpillMode && !SlotIndex::isSameInstr(ParentVNI->def, Idx) &&
MI->readsVirtualRegister(Edit->getReg())) {
- forceRecompute(0, ParentVNI);
+ forceRecompute(0, *ParentVNI);
defFromParent(0, ParentVNI, Idx, *MI->getParent(), MI);
return Idx;
}
@@ -835,7 +834,7 @@ void SplitEditor::overlapIntv(SlotIndex
// The complement interval will be extended as needed by LRCalc.extend().
if (ParentVNI)
- forceRecompute(0, ParentVNI);
+ forceRecompute(0, *ParentVNI);
DEBUG(dbgs() << " overlapIntv [" << Start << ';' << End << "):");
RegAssign.insert(Start, End, OpenIdx);
DEBUG(dump());
@@ -878,7 +877,7 @@ void SplitEditor::removeBackCopies(Small
unsigned RegIdx = AssignI.value();
if (AtBegin || !MBBI->readsVirtualRegister(Edit->getReg())) {
DEBUG(dbgs() << " cannot find simple kill of RegIdx " << RegIdx << '\n');
- forceRecompute(RegIdx, Edit->getParent().getVNInfoAt(Def));
+ forceRecompute(RegIdx, *Edit->getParent().getVNInfoAt(Def));
} else {
SlotIndex Kill = LIS.getInstructionIndex(*MBBI).getRegSlot();
DEBUG(dbgs() << " move kill to " << Kill << '\t' << *MBBI);
@@ -982,7 +981,7 @@ void SplitEditor::computeRedundantBackCo
}
}
if (!DominatedVNIs.empty()) {
- forceRecompute(0, ParentVNI);
+ forceRecompute(0, *ParentVNI);
for (auto VNI : DominatedVNIs) {
BackCopies.push_back(VNI);
}
@@ -1102,7 +1101,7 @@ void SplitEditor::hoistCopies() {
NotToHoistSet.count(ParentVNI->id))
continue;
BackCopies.push_back(VNI);
- forceRecompute(0, ParentVNI);
+ forceRecompute(0, *ParentVNI);
}
// If it is not beneficial to hoist all the BackCopies, simply remove
@@ -1428,6 +1427,41 @@ void SplitEditor::deleteRematVictims() {
Edit->eliminateDeadDefs(Dead, None, &AA);
}
+void SplitEditor::forceRecomputeVNI(const VNInfo &ParentVNI) {
+ // Fast-path for common case.
+ if (!ParentVNI.isPHIDef()) {
+ for (unsigned I = 0, E = Edit->size(); I != E; ++I)
+ forceRecompute(I, ParentVNI);
+ return;
+ }
+
+ // Trace value through phis.
+ SmallPtrSet<const VNInfo *, 8> Visited; ///< whether VNI was/is in worklist.
+ SmallVector<const VNInfo *, 4> WorkList;
+ Visited.insert(&ParentVNI);
+ WorkList.push_back(&ParentVNI);
+
+ const LiveInterval &ParentLI = Edit->getParent();
+ const SlotIndexes &Indexes = *LIS.getSlotIndexes();
+ do {
+ const VNInfo &VNI = *WorkList.back();
+ WorkList.pop_back();
+ for (unsigned I = 0, E = Edit->size(); I != E; ++I)
+ forceRecompute(I, VNI);
+ if (!VNI.isPHIDef())
+ continue;
+
+ MachineBasicBlock &MBB = *Indexes.getMBBFromIndex(VNI.def);
+ for (const MachineBasicBlock *Pred : MBB.predecessors()) {
+ SlotIndex PredEnd = Indexes.getMBBEndIdx(Pred);
+ VNInfo *PredVNI = ParentLI.getVNInfoBefore(PredEnd);
+ assert(PredVNI && "Value available in PhiVNI predecessor");
+ if (Visited.insert(PredVNI).second)
+ WorkList.push_back(PredVNI);
+ }
+ } while(!WorkList.empty());
+}
+
void SplitEditor::finish(SmallVectorImpl<unsigned> *LRMap) {
++NumFinished;
@@ -1444,8 +1478,7 @@ void SplitEditor::finish(SmallVectorImpl
// Force rematted values to be recomputed everywhere.
// The new live ranges may be truncated.
if (Edit->didRematerialize(ParentVNI))
- for (unsigned i = 0, e = Edit->size(); i != e; ++i)
- forceRecompute(i, ParentVNI);
+ forceRecomputeVNI(*ParentVNI);
}
// Hoist back-copies to the complement interval when in spill mode.
Modified: llvm/trunk/lib/CodeGen/SplitKit.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SplitKit.h?rev=324039&r1=324038&r2=324039&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SplitKit.h (original)
+++ llvm/trunk/lib/CodeGen/SplitKit.h Thu Feb 1 16:08:19 2018
@@ -357,7 +357,11 @@ private:
/// recomputed by LiveRangeCalc::extend regardless of the number of defs.
/// This is used for values whose live range doesn't match RegAssign exactly.
/// They could have rematerialized, or back-copies may have been moved.
- void forceRecompute(unsigned RegIdx, const VNInfo *ParentVNI);
+ void forceRecompute(unsigned RegIdx, const VNInfo &ParentVNI);
+
+ /// Calls forceRecompute() on any affected regidx and on ParentVNI
+ /// predecessors in case of a phi definition.
+ void forceRecomputeVNI(const VNInfo &ParentVNI);
/// defFromParent - Define Reg from ParentVNI at UseIdx using either
/// rematerialization or a COPY from parent. Return the new value.
Added: llvm/trunk/test/CodeGen/ARM/splitkit.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/ARM/splitkit.ll?rev=324039&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/ARM/splitkit.ll (added)
+++ llvm/trunk/test/CodeGen/ARM/splitkit.ll Thu Feb 1 16:08:19 2018
@@ -0,0 +1,245 @@
+; RUN: llc -o - %s | FileCheck %s
+; Make sure RegAllocGreedy/SplitKit do not produce invalid liveness information
+; and crash when splitting a liverange twice and rematerializing each time.
+; (Sorry for the testcase; this was ran through bugpoint and then manually
+; reduced for several hours but is still big...)
+target triple = "thumbv7-apple-ios"
+
+%struct.ham = type { %struct.wombat.0 }
+%struct.wombat.0 = type { %struct.barney }
+%struct.barney = type { %struct.snork.1 }
+%struct.snork.1 = type { %struct.wobble.2 }
+%struct.wobble.2 = type { %struct.blam }
+%struct.blam = type { i32, i32, i8* }
+%struct.ham.3 = type { %struct.pluto }
+%struct.pluto = type { %struct.zot*, %struct.snork.5, %struct.wibble }
+%struct.zot = type { %struct.blam.4* }
+%struct.blam.4 = type <{ %struct.zot, %struct.blam.4*, %struct.zot*, i8, [3 x i8] }>
+%struct.snork.5 = type { %struct.quux }
+%struct.quux = type { %struct.zot }
+%struct.wibble = type { %struct.widget }
+%struct.widget = type { i32 }
+%struct.bar = type { %struct.spam }
+%struct.spam = type { %struct.zot*, %struct.wobble, %struct.zot.7 }
+%struct.wobble = type { %struct.wibble.6 }
+%struct.wibble.6 = type { %struct.zot }
+%struct.zot.7 = type { %struct.ham.8 }
+%struct.ham.8 = type { i32 }
+%struct.hoge = type { %struct.ham, %struct.foo }
+%struct.foo = type { float, float }
+%struct.wombat = type { %struct.ham, float }
+%struct.snork = type { %struct.ham.9, [11 x i8] }
+%struct.ham.9 = type { i8 }
+
+ at global = external global i8
+ at global.1 = private constant [20 x i8] c"aaaaaaaaaaaaaaaaaa0\00"
+ at global.2 = external constant [27 x i8]
+ at global.3 = external global %struct.ham
+ at global.4 = external constant [47 x i8]
+ at global.5 = external constant [61 x i8]
+ at global.6 = external constant [40 x i8]
+ at global.7 = external constant [24 x i8]
+ at global.8 = external constant [20 x i8]
+ at global.9 = external global %struct.ham
+ at global.10 = external global %struct.ham
+ at global.11 = external global %struct.ham
+ at global.12 = external global %struct.ham
+ at global.13 = external global %struct.ham
+ at global.14 = external global %struct.ham
+ at global.15 = external global %struct.ham
+ at global.16 = external global %struct.ham
+ at global.17 = external global %struct.ham
+ at global.18 = external constant [35 x i8]
+ at global.19 = external global %struct.ham
+ at global.20 = external constant [53 x i8]
+ at global.21 = external global %struct.ham
+ at global.22 = external global %struct.ham
+ at global.23 = external global %struct.ham
+ at global.24 = external constant [32 x i8]
+ at global.25 = external global %struct.ham
+ at global.26 = external constant [47 x i8]
+ at global.27 = external global %struct.ham
+ at global.28 = external constant [45 x i8]
+ at global.29 = external global %struct.ham
+ at global.30 = external global %struct.ham
+ at global.31 = external constant [24 x i8]
+ at global.32 = external global %struct.ham
+ at global.33 = external global %struct.ham
+ at global.34 = external global %struct.ham
+ at global.35 = external global %struct.ham
+ at global.36 = external constant [27 x i8]
+ at global.37 = external global %struct.ham
+ at global.38 = external constant [10 x i8]
+ at global.39 = external global %struct.ham
+ at global.40 = external global %struct.ham
+ at global.41 = external global %struct.ham
+ at global.42 = external global %struct.ham
+ at global.43 = external global %struct.ham
+ at global.44 = external constant [41 x i8]
+ at global.45 = external global %struct.ham
+ at global.46 = external global %struct.ham
+ at global.47 = external global %struct.ham
+ at global.48 = external global %struct.ham
+ at global.49 = external constant [52 x i8]
+ at global.50 = external constant [47 x i8]
+ at global.51 = external global %struct.ham
+ at global.52 = external global %struct.ham
+ at global.53 = external global %struct.ham
+ at global.54 = external global %struct.ham
+ at global.55 = external global %struct.ham.3
+ at global.56 = external global %struct.bar
+ at global.57 = external global i8
+
+declare %struct.ham* @bar(%struct.ham* returned)
+
+declare i32 @__cxa_atexit(void (i8*)*, i8*, i8*)
+
+declare %struct.ham* @wobble(%struct.ham* returned, %struct.ham* )
+
+declare i32 @quux(...)
+
+declare i8* @_Znwm(i32)
+
+declare i32 @wobble.58(%struct.pluto*, [1 x i32], %struct.ham* , %struct.hoge* )
+
+declare i32 @widget(%struct.spam*, [1 x i32], %struct.ham* , %struct.wombat* )
+
+; Just check we didn't crash and did output something...
+; CHECK-LABEL: func:
+; CHECK: trap
+define internal void @func() section "__TEXT,__StaticInit,regular,pure_instructions" personality i32 (...)* @quux {
+ %tmp = tail call i32 @__cxa_atexit(void (i8*)* bitcast (%struct.ham* (%struct.ham*)* @bar to void (i8*)*), i8* bitcast (%struct.ham* @global.3 to i8*), i8* @global) #0
+ %tmp2 = invoke %struct.ham* @wobble(%struct.ham* undef, %struct.ham* @global.9)
+ to label %bb14 unwind label %bbunwind
+
+bb14:
+ %tmp15 = getelementptr i8, i8* undef, i32 12
+ store i8 0, i8* %tmp15
+ %tmp16 = icmp eq i8 undef, 0
+ br i1 %tmp16, label %bb28, label %bb18
+
+bb18:
+ br i1 undef, label %bb21, label %bb29
+
+bb21:
+ %tmp22 = call i8* @_Znwm(i32 16)
+ store i32 17, i32* getelementptr (%struct.ham, %struct.ham* @global.10, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
+ %tmp23 = call i8* @_Znwm(i32 32)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 undef, i8* align 1 getelementptr ([27 x i8], [27 x i8]* @global.2, i32 0, i32 0), i32 26, i1 false)
+ store i32 33, i32* getelementptr (%struct.ham, %struct.ham* @global.11, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
+ store i32 23, i32* getelementptr (%struct.ham, %struct.ham* @global.11, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 1)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 undef, i8* align 1 getelementptr ([24 x i8], [24 x i8]* @global.7, i32 0, i32 0), i32 23, i1 false)
+ %tmp24 = call i32 @__cxa_atexit(void (i8*)* bitcast (%struct.ham* (%struct.ham*)* @bar to void (i8*)*), i8* bitcast (%struct.ham* @global.11 to i8*), i8* @global) #0
+ store i32 49, i32* getelementptr (%struct.ham, %struct.ham* @global.12, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
+ store i32 37, i32* getelementptr (%struct.ham, %struct.ham* @global.13, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 1)
+ call void @llvm.memset.p0i8.i32(i8* align 4 bitcast (%struct.ham* @global.14 to i8*), i8 0, i32 12, i1 false)
+ %tmp25 = call i8* @_Znwm(i32 48)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %tmp25, i8* align 1 getelementptr ([40 x i8], [40 x i8]* @global.6, i32 0, i32 0), i32 39, i1 false)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 undef, i8* align 1 getelementptr ([47 x i8], [47 x i8]* @global.4, i32 0, i32 0), i32 46, i1 false)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 undef, i8* align 1 getelementptr ([61 x i8], [61 x i8]* @global.5, i32 0, i32 0), i32 60, i1 false)
+ %tmp26 = call i8* @_Znwm(i32 48)
+ store i32 65, i32* getelementptr (%struct.ham, %struct.ham* @global.15, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
+ %tmp27 = icmp eq i8 undef, 0
+ br i1 %tmp27, label %bb30, label %bb33
+
+bb28:
+ call void @llvm.trap()
+ unreachable
+
+bb29:
+ call void @llvm.trap()
+ unreachable
+
+bb30:
+ %tmp31 = icmp eq i32 undef, 37
+ br i1 %tmp31, label %bb32, label %bb30
+
+bb32:
+ store i8 1, i8* @global.57
+ br label %bb33
+
+bb33:
+ %tmp34 = call i8* @_Znwm(i32 32)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 undef, i8* align 1 getelementptr ([20 x i8], [20 x i8]* @global.1, i32 0, i32 0), i32 19, i1 false)
+ store i32 17, i32* getelementptr (%struct.ham, %struct.ham* @global.16, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
+ store i32 65, i32* getelementptr (%struct.ham, %struct.ham* @global.17, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 undef, i8* align 1 getelementptr ([35 x i8], [35 x i8]* @global.18, i32 0, i32 0), i32 34, i1 false)
+ store i32 65, i32* getelementptr (%struct.ham, %struct.ham* @global.19, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 undef, i8* align 1 getelementptr ([53 x i8], [53 x i8]* @global.20, i32 0, i32 0), i32 52, i1 false)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 undef, i8* align 1 getelementptr ([20 x i8], [20 x i8]* @global.8, i32 0, i32 0), i32 19, i1 false)
+ store i32 37, i32* getelementptr (%struct.ham, %struct.ham* @global.21, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 1)
+ %tmp35 = call i8* @_Znwm(i32 32)
+ store i8 16, i8* bitcast (%struct.ham* @global.22 to i8*)
+ %tmp36 = call i8* @_Znwm(i32 32)
+ store i32 31, i32* getelementptr (%struct.ham, %struct.ham* @global.23, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 1)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %tmp36, i8* align 1 getelementptr ([32 x i8], [32 x i8]* @global.24, i32 0, i32 0), i32 31, i1 false)
+ %tmp37 = getelementptr i8, i8* %tmp36, i32 31
+ store i8 0, i8* %tmp37
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 undef, i8* align 1 getelementptr ([47 x i8], [47 x i8]* @global.26, i32 0, i32 0), i32 46, i1 false)
+ %tmp38 = call i32 @__cxa_atexit(void (i8*)* bitcast (%struct.ham* (%struct.ham*)* @bar to void (i8*)*), i8* bitcast (%struct.ham* @global.25 to i8*), i8* @global) #0
+ %tmp39 = call i8* @_Znwm(i32 48)
+ store i32 44, i32* getelementptr (%struct.ham, %struct.ham* @global.27, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 1)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %tmp39, i8* align 1 getelementptr ([45 x i8], [45 x i8]* @global.28, i32 0, i32 0), i32 44, i1 false)
+ %tmp40 = getelementptr i8, i8* %tmp39, i32 44
+ store i8 0, i8* %tmp40
+ call void @llvm.memset.p0i8.i32(i8* align 4 bitcast (%struct.ham* @global.29 to i8*), i8 0, i32 12, i1 false)
+ %tmp41 = call i8* @_Znwm(i32 32)
+ store i32 23, i32* getelementptr (%struct.ham, %struct.ham* @global.30, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 1)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %tmp41, i8* align 1 getelementptr ([24 x i8], [24 x i8]* @global.31, i32 0, i32 0), i32 23, i1 false)
+ %tmp42 = getelementptr i8, i8* %tmp41, i32 23
+ store i8 0, i8* %tmp42
+ call void @llvm.memset.p0i8.i32(i8* align 4 bitcast (%struct.ham* @global.32 to i8*), i8 0, i32 12, i1 false)
+ store i8 16, i8* bitcast (%struct.ham* @global.32 to i8*)
+ %tmp43 = call i32 @__cxa_atexit(void (i8*)* bitcast (%struct.ham* (%struct.ham*)* @bar to void (i8*)*), i8* bitcast (%struct.ham* @global.33 to i8*), i8* @global) #0
+ %tmp44 = call i8* @_Znwm(i32 16)
+ call void @llvm.memset.p0i8.i32(i8* align 4 bitcast (%struct.ham* @global.34 to i8*), i8 0, i32 12, i1 false)
+ call void @llvm.memset.p0i8.i32(i8* align 4 bitcast (%struct.ham* @global.9 to i8*), i8 0, i32 12, i1 false)
+ %tmp45 = call i8* @_Znwm(i32 32)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %tmp45, i8* align 1 getelementptr ([27 x i8], [27 x i8]* @global.36, i32 0, i32 0), i32 26, i1 false)
+ call void @llvm.memset.p0i8.i32(i8* align 4 bitcast (%struct.ham* @global.37 to i8*), i8 0, i32 12, i1 false)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 getelementptr (%struct.snork, %struct.snork* bitcast (%struct.ham* @global.37 to %struct.snork*), i32 0, i32 1, i32 0), i8* align 1 getelementptr ([10 x i8], [10 x i8]* @global.38, i32 0, i32 0), i32 9, i1 false)
+ store i32 17, i32* getelementptr (%struct.ham, %struct.ham* @global.39, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
+ %tmp46 = call i32 @__cxa_atexit(void (i8*)* bitcast (%struct.ham* (%struct.ham*)* @bar to void (i8*)*), i8* bitcast (%struct.ham* @global.40 to i8*), i8* @global) #0
+ %tmp47 = call i8* @_Znwm(i32 32)
+ %tmp48 = getelementptr i8, i8* %tmp47, i32 21
+ store i8 0, i8* %tmp48
+ store i32 33, i32* getelementptr (%struct.ham, %struct.ham* @global.41, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
+ store i32 15, i32* getelementptr (%struct.ham, %struct.ham* @global.42, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 1)
+ %tmp49 = call i32 @__cxa_atexit(void (i8*)* bitcast (%struct.ham* (%struct.ham*)* @bar to void (i8*)*), i8* bitcast (%struct.ham* @global.43 to i8*), i8* @global) #0
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 undef, i8* align 1 getelementptr ([41 x i8], [41 x i8]* @global.44, i32 0, i32 0), i32 40, i1 false)
+ %tmp50 = call i32 @__cxa_atexit(void (i8*)* bitcast (%struct.ham* (%struct.ham*)* @bar to void (i8*)*), i8* bitcast (%struct.ham* @global.45 to i8*), i8* @global) #0
+ %tmp51 = call i32 @__cxa_atexit(void (i8*)* bitcast (%struct.ham* (%struct.ham*)* @bar to void (i8*)*), i8* bitcast (%struct.ham* @global.46 to i8*), i8* @global) #0
+ %tmp52 = call i8* @_Znwm(i32 32)
+ store i8* %tmp52, i8** getelementptr (%struct.ham, %struct.ham* @global.47, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 2)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 undef, i8* align 1 getelementptr ([52 x i8], [52 x i8]* @global.49, i32 0, i32 0), i32 51, i1 false)
+ %tmp53 = call i32 @__cxa_atexit(void (i8*)* bitcast (%struct.ham* (%struct.ham*)* @bar to void (i8*)*), i8* bitcast (%struct.ham* @global.48 to i8*), i8* @global) #0
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 undef, i8* align 1 getelementptr ([47 x i8], [47 x i8]* @global.50, i32 0, i32 0), i32 46, i1 false)
+ store i32 33, i32* getelementptr (%struct.ham, %struct.ham* @global.51, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
+ store i32 37, i32* getelementptr (%struct.ham, %struct.ham* @global.52, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 1)
+ %tmp54 = invoke %struct.ham* @wobble(%struct.ham* undef, %struct.ham* @global.54)
+ to label %bb58 unwind label %bbunwind
+
+bb58:
+ %tmp59 = invoke i32 @wobble.58(%struct.pluto* getelementptr (%struct.ham.3, %struct.ham.3* @global.55, i32 0, i32 0), [1 x i32] [i32 ptrtoint (%struct.zot* getelementptr (%struct.ham.3, %struct.ham.3* @global.55, i32 0, i32 0, i32 1, i32 0, i32 0) to i32)], %struct.ham* undef, %struct.hoge* undef)
+ to label %bb71 unwind label %bbunwind
+
+bb71:
+ %tmp72 = invoke i32 @widget(%struct.spam* getelementptr (%struct.bar, %struct.bar* @global.56, i32 0, i32 0), [1 x i32] [i32 ptrtoint (%struct.zot* getelementptr (%struct.bar, %struct.bar* @global.56, i32 0, i32 0, i32 1, i32 0, i32 0) to i32)], %struct.ham* undef, %struct.wombat* undef)
+ to label %bb73 unwind label %bbunwind
+
+bb73:
+ ret void
+
+bbunwind:
+ %tmp75 = landingpad { i8*, i32 }
+ cleanup
+ resume { i8*, i32 } undef
+}
+
+declare void @llvm.trap()
+
+declare void @llvm.memcpy.p0i8.p0i8.i32(i8* , i8* , i32, i1)
+
+declare void @llvm.memset.p0i8.i32(i8* , i8, i32, i1)
+
+attributes #0 = { nounwind }
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