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Re-enables the new vector select in the bitcode reader, by modifying the

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bitcode reader/writer as follows:

- add and use new bitcode FUNC_CODE_INST_VSELECT to handle the llvm
select opcode using either i1 or [N x i1] as the selector.
- retain old BITCODE FUNC_CODE_INST_SELECT in the bitcode reader to
handle select on i1 for backwards compatibility with existing bitcode
files.
- re-enable the vector-select.ll test program.

Also, rename the recently added bitcode opcode FUNC_CODE_INST_VCMP to
FUNC_CODE_INST_CMP2 and make the bitcode writer use it to handle
fcmp/icmp on scalars or vectors. In the bitcode writer, use
FUNC_CODE_INST_CMP for vfcmp/vicmp only. In the bitcode reader, have
FUNC_CODE_INST_CMP handle icmp/fcmp returning bool, for backwards
compatibility with existing bitcode files.

Patch by Preston Gurd!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56233 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-09-16 01:01:33 +00:00
parent fd6edef87b
commit fb2bbbe786
4 changed files with 33 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
lib/Bitcode/Writer/BitcodeWriter.cpp
View File

@ -746,10 +746,10 @@ static void WriteInstruction(const Instruction &I, unsigned InstID,
break;
}
case Instruction::Select:
Code = bitc::FUNC_CODE_INST_SELECT;
Code = bitc::FUNC_CODE_INST_VSELECT;
PushValueAndType(I.getOperand(1), InstID, Vals, VE);
Vals.push_back(VE.getValueID(I.getOperand(2)));
Vals.push_back(VE.getValueID(I.getOperand(0)));
PushValueAndType(I.getOperand(0), InstID, Vals, VE);
break;
case Instruction::ExtractElement:
Code = bitc::FUNC_CODE_INST_EXTRACTELT;
@ -772,11 +772,10 @@ static void WriteInstruction(const Instruction &I, unsigned InstID,
case Instruction::FCmp:
case Instruction::VICmp:
case Instruction::VFCmp:
if (isa<VectorType>(I.getOperand(0)->getType())
&& (I.getOpcode() == Instruction::ICmp
|| I.getOpcode() == Instruction::FCmp)) {
// compare returning vector of Int1Ty
Code = bitc::FUNC_CODE_INST_VCMP;
if (I.getOpcode() == Instruction::ICmp
|| I.getOpcode() == Instruction::FCmp) {
// compare returning Int1Ty or vector of Int1Ty
Code = bitc::FUNC_CODE_INST_CMP2;
} else {
Code = bitc::FUNC_CODE_INST_CMP;
}