[LLVMbugs] [Bug 5773] New: Creating a JIT-ExecutionEngine overrides the CodeModel set by TargetMachine
bugzilla-daemon at cs.uiuc.edu
bugzilla-daemon at cs.uiuc.edu
Sat Dec 12 15:42:30 PST 2009
http://llvm.org/bugs/show_bug.cgi?id=5773
Summary: Creating a JIT-ExecutionEngine overrides the CodeModel
set by TargetMachine
Product: new-bugs
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: new bugs
AssignedTo: unassignedbugs at nondot.org
ReportedBy: ebo at 4geeks.de
CC: llvmbugs at cs.uiuc.edu
The constructor of X86TargetMachine sets the CodeModel from Default to Small on
x86_32 targets.
When creating a new ExecutionEngine via ExecutionEngine::create((ModuleProvider
*MP, bool ForceInterpreter=false, ...) this gets reset to Default by
ExecutionEngine::createJit.
The value is taken from EngineBuilder::CMModel, which gets initialized to
Default.
On this code path there is no way to influence this value.
X86FastISel only implements the Small code model and tests for cm ==
CodeModel::Small, thus fails even on 32bit.
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