[llvm-commits] [llvm] r66870 - in /llvm/trunk/lib/CodeGen: RegAllocLinearScan.cpp RegAllocPBQP.cpp VirtRegMap.cpp VirtRegMap.h

[Sanjiv.Gupta at microchip.com]

Looks like this breaks PBQP (at least for PIC16).

llc: /home/i00171/projects/c16/include/llvm/PassAnalysisSupport.h:199: AnalysisType& llvm::Pass::getAnalysisID(const llvm::PassInfo*) const [with AnalysisType = llvm::VirtRegMap]: Assertion `ResultPass && "getAnalysis*() called on an analysis that was not " "'required' by pass!"' failed.
0   llc       0x087e2206
1   llc       0x087e27ef
2   libc.so.6 0x0015b0d8
3   libc.so.6 0x0015c705 abort + 469
4   libc.so.6 0x00154619
5   llc       0x0858c766 llvm::VirtRegMap& llvm::Pass::getAnalysisID<llvm::VirtRegMap>(llvm::PassInfo const*) const + 190
6   llc       0x0858c83e llvm::VirtRegMap& llvm::Pass::getAnalysis<llvm::VirtRegMap>() const + 90
7   llc       0x08593fd0
8   llc       0x083837be llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 52
9   llc       0x0876145d llvm::FPPassManager::runOnFunction(llvm::Function&) + 289
10  llc       0x087619ee llvm::FunctionPassManagerImpl::run(llvm::Function&) + 124
11  llc       0x08761b77 llvm::FunctionPassManager::run(llvm::Function&) + 159
12  llc       0x0833e099 main + 2673
13  libc.so.6 0x0014879a __libc_start_main + 218
14  llc       0x0833c2d1 dlopen + 65
Stack dump:
0.      Program arguments: llc -regalloc=pbqp -f -march=pic16 direct_load_char.bc
1.      Running pass 'PBQP Register Allocator' on function '@main'


The test case is

; ModuleID = 'direct_load_char.c'
target datalayout = "e-p:16:8:8-i8:8:8-i16:8:8-i32:8:8"
target triple = "pic16-pc-linux-gnu"
        %struct.__block_descriptor = type { i32, i32 }
        %struct.__block_literal_generic = type { i8*, i16, i16, i8*, %struct.__block_descriptor* }
@ptr = global i8* inttoptr (i64 160 to i8*), align 1            ; <i8**> [#uses=1]
@i = common global i8 0, align 1                ; <i8*> [#uses=2]
@k = common global i8 0, align 1                ; <i8*> [#uses=2]
@j = global i8 1, align 1               ; <i8*> [#uses=3]

define void @main() nounwind {
entry:
        %tmp = load i8* @j              ; <i8> [#uses=1]
        store i8 %tmp, i8* @i
        %tmp1 = load i8* @i             ; <i8> [#uses=1]
        store i8 %tmp1, i8* @k
        %tmp2 = load i8* @k             ; <i8> [#uses=1]
        store i8 %tmp2, i8* @j
        %tmp3 = load i8** @ptr          ; <i8*> [#uses=1]
        %tmp4 = load i8* @j             ; <i8> [#uses=1]
        store i8 %tmp4, i8* %tmp3
        ret void
}


- Sanjiv

-----Original Message-----
From: llvm-commits-bounces at cs.uiuc.edu on behalf of Owen Anderson
Sent: Fri 3/13/2009 11:25 AM
To: llvm-commits at cs.uiuc.edu
Subject: [llvm-commits] [llvm] r66870 - in /llvm/trunk/lib/CodeGen: RegAllocLinearScan.cpp RegAllocPBQP.cpp VirtRegMap.cpp VirtRegMap.h
 
Author: resistor
Date: Fri Mar 13 00:55:11 2009
New Revision: 66870

URL: http://llvm.org/viewvc/llvm-project?rev=66870&view=rev
Log:
Convert VirtRegMap to a MachineFunctionPass.

Modified:
    llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp
    llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp
    llvm/trunk/lib/CodeGen/VirtRegMap.cpp
    llvm/trunk/lib/CodeGen/VirtRegMap.h

Modified: llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp?rev=66870&r1=66869&r2=66870&view=diff


--- llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp (original)
+++ llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp Fri Mar 13 00:55:11 2009
@@ -799,8 +799,7 @@
   lss = &getAnalysis<LiveStacks>();
   loopInfo = &getAnalysis<MachineLoopInfo>();
 
-  std::auto_ptr<VirtRegMap> vrmAutoPtr(new VirtRegMap(*mf));
-  vrm = vrmAutoPtr.get();
+  vrm = &getAnalysis<VirtRegMap>();
 
   DOUT << "PBQP Register Allocating for " << mf->getFunction()->getName() << "\n";
 

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