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authorDavid Greene <greened@obbligato.org>2011-07-11 18:25:51 +0000
committerDavid Greene <greened@obbligato.org>2011-07-11 18:25:51 +0000
commitd4a9066c93da9a5aab47ca228d82e796fdec70c0 (patch)
treef4533e3a9fe75aa310bd4682b254a053af0bfd73 /utils/TableGen/X86RecognizableInstr.cpp
parent7ae0df41422193e65231a0f9526bfe66067c6532 (diff)
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[AVX] Make Inits Foldable
Manage Inits in a FoldingSet. This provides several benefits: - Memory for Inits is properly managed - Duplicate Inits are folded into Flyweights, saving memory - It enforces const-correctness, protecting against certain classes of bugs The above benefits allow Inits to be used in more contexts, which in turn provides more dynamism to TableGen. This enhanced capability will be used by the AVX code generator to a fold common patterns together. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134907 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils/TableGen/X86RecognizableInstr.cpp')
-rw-r--r--utils/TableGen/X86RecognizableInstr.cpp6
1 files changed, 3 insertions, 3 deletions
diff --git a/utils/TableGen/X86RecognizableInstr.cpp b/utils/TableGen/X86RecognizableInstr.cpp
index f7518a988c..f7170c41e7 100644
--- a/utils/TableGen/X86RecognizableInstr.cpp
+++ b/utils/TableGen/X86RecognizableInstr.cpp
@@ -162,7 +162,7 @@ static bool isRegFormat(uint8_t form) {
/// @param init - A reference to the BitsInit to be decoded.
/// @return - The field, with the first bit in the BitsInit as the lowest
/// order bit.
-static uint8_t byteFromBitsInit(BitsInit &init) {
+static uint8_t byteFromBitsInit(const BitsInit &init) {
int width = init.getNumBits();
assert(width <= 8 && "Field is too large for uint8_t!");
@@ -173,7 +173,7 @@ static uint8_t byteFromBitsInit(BitsInit &init) {
uint8_t ret = 0;
for (index = 0; index < width; index++) {
- if (static_cast<BitInit*>(init.getBit(index))->getValue())
+ if (static_cast<const BitInit*>(init.getBit(index))->getValue())
ret |= mask;
mask <<= 1;
@@ -189,7 +189,7 @@ static uint8_t byteFromBitsInit(BitsInit &init) {
/// @param name - The name of the field in the record.
/// @return - The field, as translated by byteFromBitsInit().
static uint8_t byteFromRec(const Record* rec, const std::string &name) {
- BitsInit* bits = rec->getValueAsBitsInit(name);
+ const BitsInit* bits = rec->getValueAsBitsInit(name);
return byteFromBitsInit(*bits);
}