emscripten-fastcomp - LLVM with the emscripten fastcomp javascript backend

Age	Commit message (Collapse)	Author
2013-06-10	PNaCl: Extend ExpandStructRegs to handle "insertvalue" instructions	Mark Seaborn
	Previously, the pass could expand out struct_load+extractvalue combinations (via ReplaceUsesOfStructWithFields()). This change makes the pass more general by converting struct_loads to scalar_load+insertvalue combinations and then by expanding out insertvalue+extractvalue combinations. This means the pass can now handle the insertvalue instructions that are sometimes generated by the SROA pass. (Clang compiles ScummVM's use of C++ method pointers to struct loads+stores which SROA generates insertvalue instructions from.) To make the pass more general, we also extend it to be able to handle phi nodes of struct type. These are split into extractvalue+scalar_phi+insertvalue combinations. However, the pass is not yet fully general, because it doesn't handle: * nested struct types * array types Change ExpandArithWithOverflow to rely on ExpandStructRegs' insertvalue handling rather than the less general ReplaceUsesOfStructWithFields() helper function, which can now be removed. SplitUpStore() no longer needs to handle Constants, because this case is handled by ExpandExtractValue(). BUG=https://code.google.com/p/nativeclient/issues/detail?id=3476 TEST=*.ll tests + PNaCl toolchain trybots Review URL: https://codereview.chromium.org/16448006
2013-05-30	PNaCl: Add a pass to expand out Clang's use of registers of struct type	Mark Seaborn
	Clang's implementation of C++ method pointers generates IR that uses LLVM registers with struct type -- specifically, loads and stores of struct values, and extractvalue instructions. See lib/CodeGen/ItaniumCXXABI.cpp in Clang. Add a pass, ExpandStructRegs, which expands out those uses. Factor out a function from ExpandArithWithOverflow so that the two passes can share some code. BUG=https://code.google.com/p/nativeclient/issues/detail?id=3343 TEST=*.ll tests + trybots + GCC torture tests Review URL: https://codereview.chromium.org/15692014
2013-05-29	PNaCl: Add ExpandSmallArguments pass to widen parameters to 32 bits	Mark Seaborn
	This widens i1, i8 and i16 function arguments and return types. Factor out RecreateFunction() helper function from existing PNaCl passes since this is a reoccurring code fragment. BUG=https://code.google.com/p/nativeclient/issues/detail?id=3342 TEST=*.ll tests + PNaCl toolchain trybots + GCC torture tests + LLVM test suite Review URL: https://codereview.chromium.org/15971007
2013-05-22	PNaCl: Add ReplacePtrsWithInts pass for stripping out pointer types	Mark Seaborn
	ReplacePtrsWithInts converts IR to a normal form in which functions don't reference any aggregate pointer types and pointer types only appear inside a few instructions. Change BlockAddress::replaceUsesOfWithOnConstant() to handle changing a function's type by replacing a function with a bitcast ConstantExpr of a new function. BUG=https://code.google.com/p/nativeclient/issues/detail?id=3343 TEST=replace-ptrs-with-ints.ll + PNaCl toolchain trybots, torture tests, etc. Review URL: https://codereview.chromium.org/14262011
2013-03-29	PNaCl: Fix ExpandTls to handle a couple of corner cases involving PHI nodes	Mark Seaborn
	ExpandTls's use of replaceUsesOfWith() didn't work for PHI nodes containing the same Constant twice (which needs to work for same or differing incoming BasicBlocks). The same applies to ExpandTlsConstantExpr. I noticed this while implementing ExpandConstantExpr. Fix this and factor out some common code that all three passes can use. BUG=https://code.google.com/p/nativeclient/issues/detail?id=2837 TEST=test/Transforms/NaCl/*.ll Review URL: https://codereview.chromium.org/13128002