Assertion `SnippetCopies.count(MI) && "Remaining use wasn't a snippet copy"' failed.

[regehr]

Bugzilla Link	11347
Resolution	FIXED
Resolved on	Nov 09, 2011 18:17
Version	trunk
OS	Linux
CC	@stoklund

Extended Description

[regehr@gamow tmp053]$ clang -v

clang version 3.1 (trunk 144189)
Target: x86_64-unknown-linux-gnu
Thread model: posix

[regehr@gamow tmp053]$ clang -O1 -w small.c

clang: InlineSpiller.cpp:1238: void::InlineSpiller::spillAll(): Assertion `SnippetCopies.count(MI) && "Remaining use wasn't a snippet copy"' failed.
0 clang 0x0000000001cf4f9f
1 clang 0x0000000001cf7212
2 libpthread.so.0 0x00007ffff7bcf8f0
3 libc.so.6 0x00007ffff6ebea75 gsignal + 53
4 libc.so.6 0x00007ffff6ec25c0 abort + 384
5 libc.so.6 0x00007ffff6eb7941 __assert_fail + 241
6 clang 0x00000000018d39c1
7 clang 0x00000000018d5892
8 clang 0x000000000182fb2b
9 clang 0x0000000001917d63 llvm::RegAllocBase::allocatePhysRegs() + 611
10 clang 0x000000000182923e
11 clang 0x0000000001c49b0b llvm::FPPassManager::runOnFunction(llvm::Function&) + 587
12 clang 0x0000000001c49bf3 llvm::FPPassManager::runOnModule(llvm::Module&) + 51
13 clang 0x0000000001c49607 llvm::MPPassManager::runOnModule(llvm::Module&) + 503
14 clang 0x0000000001c4979b llvm::PassManagerImpl::run(llvm::Module&) + 187
15 clang 0x0000000000830908 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::Module*, clang::BackendAction, llvm::raw_ostream*) + 1592
16 clang 0x000000000082e081 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) + 353
17 clang 0x000000000097a2ff clang::ParseAST(clang::Sema&, bool) + 431
18 clang 0x000000000082cc64 clang::CodeGenAction::ExecuteAction() + 68
19 clang 0x00000000006ec265 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 373
20 clang 0x00000000006cffc9 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1401
21 clang 0x00000000006c6257 cc1_main(char const**, char const**, char const*, void*) + 791
22 clang 0x00000000006ced97 main + 7175
23 libc.so.6 0x00007ffff6ea9c4d __libc_start_main + 253
24 clang 0x00000000006c3e59
Stack dump:
0. Program arguments: /uusoc/exports/scratch/regehr/z/llvm-install/bin/clang -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -disable-free -main-file-name small.c -mrelocation-model static -mdisable-fp-elim -masm-verbose -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-linker-version 2.20.1 -momit-leaf-frame-pointer -resource-dir /uusoc/exports/scratch/regehr/z/llvm-install/bin/../lib/clang/3.1 -fmodule-cache-path /var/tmp/clang-module-cache -I /opt/intel/composerxe-2011.5.220/mkl/include -I /opt/intel/composerxe-2011.5.220/tbb/include -internal-isystem /usr/local/include -internal-isystem /uusoc/exports/scratch/regehr/z/llvm-install/bin/../lib/clang/3.1/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -O1 -w -fdebug-compilation-dir /home/regehr/z/volatile/bugs/tmp053 -ferror-limit 19 -fmessage-length 80 -fgnu-runtime -fobjc-runtime-has-arc -fobjc-runtime-has-weak -fobjc-fragile-abi -fdiagnostics-show-option -fcolor-diagnostics -o /tmp/small-DBiXds.o -x c small.c

1. parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module 'small.c'.
4. Running pass 'Greedy Register Allocator' on function '@func_25'
   clang: error: unable to execute command: Aborted
   clang: error: clang frontend command failed due to signal 2 (use -v to see invocation)
   clang: note: diagnostic msg: Please submit a bug report to http://llvm.org/bugs/ and include command line arguments and all diagnostic information.
   clang: note: diagnostic msg: Preprocessed source(s) and associated run script(s) are located at:
   clang: note: diagnostic msg: /tmp/small-CysEGN.i
   clang: note: diagnostic msg: /tmp/small-CysEGN.sh

[regehr@gamow tmp053]$ cat small.c

int
func_5 (int si1, int si2)
{
return si1;
}

int
func_9 (int si1, int si2)
{
return si1;
}

int
func_21 (short left, int right)
{
return left;
}

int
func_26 (int ui1, int ui2)
{
return ui1;
}

int
func_42 (int ui1, int ui2)
{
return ui2;
}

int g_71;
int g_93;
int g_103;
int g_193;
int g_238;
int g_320;
int g_410;
int func_39 (int, int, int, int);
int func_44 ();
int
func_25 (int p_27, char p_28, int p_30)
{
int l_148;
int l_288;
int l_365;
for (;;)
{
int l_349;
int l_352;
func_26 (func_42 (l_352 = p_27 || (l_349 = 0) < g_93, 0) >= 0, 0);
if (l_349)
{
int l_395 = 0;
l_349 = g_238 = (l_365 &= g_320 = func_44 ()
|| (l_352 |= func_5 (0, 0))) ^ p_28;
if (l_352)
l_395 = 1;
else
g_71 = 0;
if (p_30 = 0 != l_349)
if (func_39 (0, l_288 |= 1, 0, 0))
g_410 = func_9 (func_21 (l_395, 0), 0);
else
g_193 = p_30, p_28 = l_395;
for (; g_103; g_103++)
{
}
}
else
for (;;)
{
}
}
}

[stoklund]

Fixed in r144247. Thanks!