6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-08-05 13:26:55 +00:00
Code Issues Projects Releases Wiki Activity

First part of PR12251. Add documentation and verifier support for the range

Browse Source 
metadata.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153359 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2012-03-24 00:14:51 +00:00
parent 1db394921b
commit 39dd328ed0
6 changed files with 165 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
lib/VMCore/Verifier.cpp
View File

@@ -51,6 +51,7 @@
#include "llvm/DerivedTypes.h"
#include "llvm/InlineAsm.h"
#include "llvm/IntrinsicInst.h"
#include "llvm/LLVMContext.h"
#include "llvm/Metadata.h"
#include "llvm/Module.h"
#include "llvm/Pass.h"
@@ -1369,6 +1370,25 @@ void Verifier::visitLoadInst(LoadInst &LI) {
Assert1(LI.getSynchScope() == CrossThread,
"Non-atomic load cannot have SynchronizationScope specified", &LI);
}
if (MDNode *Range = LI.getMetadata(LLVMContext::MD_range)) {
unsigned NumOperands = Range->getNumOperands();
Assert1(NumOperands % 2 == 0, "Unfinished range!", Range);
unsigned NumRanges = NumOperands / 2;
Assert1(NumRanges >= 1, "It should have at least one range!", Range);
for (unsigned i = 0; i < NumRanges; ++i) {
ConstantInt *Low = dyn_cast<ConstantInt>(Range->getOperand(2*i));
Assert1(Low, "The lower limit must be an integer!", Low);
ConstantInt *High = dyn_cast<ConstantInt>(Range->getOperand(2*i + 1));
Assert1(High, "The upper limit must be an integer!", High);
Assert1(High->getType() == Low->getType() &&
High->getType() == ElTy, "Range types must match load type!",
&LI);
Assert1(High->getValue() != Low->getValue(), "Range must not be empty!",
Range);
}
}
visitInstruction(LI);
}
@@ -1641,6 +1661,10 @@ void Verifier::visitInstruction(Instruction &I) {
"Cannot take the address of an inline asm!", &I);
}
}
MDNode *MD = I.getMetadata(LLVMContext::MD_range);
Assert1(!MD || isa<LoadInst>(I), "Ranges are only for loads!", &I);
InstsInThisBlock.insert(&I);
}