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Add a new constructor to TargetData that builds a TargetData from its

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string representation.

This is part of PR 761.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28234 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2006-05-12 05:49:47 +00:00
parent 21a57dc751
commit 8f60c56a06
2 changed files with 72 additions and 0 deletions
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7
include/llvm/Target/TargetData.h
View File

@ -53,6 +53,13 @@ public:
unsigned char IntAl = 4, unsigned char ShortAl = 2,
unsigned char ByteAl = 1, unsigned char BoolAl = 1);
/// Constructs a TargetData from a string of the following format:
/// "E-p:64:64-d:64:64-f:32:32-l:64:64-i:32:32-s:16:16-b:8:8-B:8:8"
/// The above string is considered the default, and any values not specified
/// in the string will be assumed to be as above.
TargetData(const std::string &TargetName,
const std::string &TargetDescription);
// Copy constructor
TargetData (const TargetData &TD) :
ImmutablePass(),

65
lib/Target/TargetData.cpp
View File

@ -22,7 +22,9 @@
#include "llvm/Constants.h"
#include "llvm/Support/GetElementPtrTypeIterator.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/ADT/StringExtras.h"
#include <algorithm>
#include <cstdlib>
using namespace llvm;
// Handle the Pass registration stuff necessary to use TargetData's.
@ -118,6 +120,69 @@ TargetData::TargetData(const std::string &TargetName,
BoolAlignment = BoolAl;
}
TargetData::TargetData(const std::string &TargetName,
const std::string &TargetDescription) {
std::string temp = TargetDescription;
LittleEndian = false;
PointerSize = 8;
PointerAlignment = 8;
DoubleAlignment = 8;
FloatAlignment = 4;
LongAlignment = 8;
IntAlignment = 4;
ShortAlignment = 2;
ByteAlignment = 1;
BoolAlignment = 1;
while (temp.length() > 0) {
std::string token = getToken(temp, "-");
switch(token[0]) {
case 'E':
LittleEndian = false;
break;
case 'e':
LittleEndian = true;
break;
case 'p':
PointerSize = atoi(getToken(token,":").c_str()) / 8;
PointerAlignment = atoi(getToken(token,":").c_str()) / 8;
break;
case 'd':
token = getToken(token,":"); //Ignore the size
DoubleAlignment = atoi(getToken(token,":").c_str()) / 8;
break;
case 'f':
token = getToken(token, ":"); //Ignore the size
FloatAlignment = atoi(getToken(token, ":").c_str()) / 8;
break;
case 'l':
token = getToken(token, ":"); //Ignore the size
LongAlignment = atoi(getToken(token, ":").c_str()) / 8;
break;
case 'i':
token = getToken(token, ":"); //Ignore the size
IntAlignment = atoi(getToken(token, ":").c_str()) / 8;
break;
case 's':
token = getToken(token, ":"); //Ignore the size
ShortAlignment = atoi(getToken(token, ":").c_str()) / 8;
break;
case 'b':
token = getToken(token, ":"); //Ignore the size
ByteAlignment = atoi(getToken(token, ":").c_str()) / 8;
break;
case 'B':
token = getToken(token, ":"); //Ignore the size
BoolAlignment = atoi(getToken(token, ":").c_str()) / 8;
break;
default:
break;
}
}
}
TargetData::TargetData(const std::string &ToolName, const Module *M) {
LittleEndian = M->getEndianness() != Module::BigEndian;
PointerSize = M->getPointerSize() != Module::Pointer64 ? 4 : 8;