diff options
Diffstat (limited to 'lib/Target/JSBackend/JSBackend.cpp')
| -rw-r--r-- | lib/Target/JSBackend/JSBackend.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/Target/JSBackend/JSBackend.cpp b/lib/Target/JSBackend/JSBackend.cpp index ac6aaf053c..fb7aa0f4d4 100644 --- a/lib/Target/JSBackend/JSBackend.cpp +++ b/lib/Target/JSBackend/JSBackend.cpp @@ -141,6 +141,9 @@ namespace { unsigned memAlign(unsigned x) { return x + (x%MEM_ALIGN != 0 ? MEM_ALIGN - x%MEM_ALIGN : 0); } + std::string memAlignStr(std::string x) { + return "((" + x + "+" + utostr(MEM_ALIGN-1) + ")&-" + utostr(MEM_ALIGN) + ")"; + } HeapData *allocateAddress(const std::string& Name, unsigned Bits = MEM_ALIGN_BITS) { assert(Bits == 64); // FIXME when we use optimal alignments @@ -1136,7 +1139,7 @@ void JSWriter::generateInstruction(const Instruction *I, raw_string_ostream& Cod if (const ConstantInt *CI = dyn_cast<ConstantInt>(AS)) { Size = Twine(memAlign(BaseSize * CI->getZExtValue())).str(); } else { - Size = "((" + utostr(BaseSize) + '*' + getValueAsStr(AS) + ")|0)"; + Size = memAlignStr("((" + utostr(BaseSize) + '*' + getValueAsStr(AS) + ")|0)"); } } Code << getAssign(iName, Type::getInt32Ty(I->getContext())) + "STACKTOP; STACKTOP = STACKTOP + " + Size + "|0;"; |