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...on loops (prior to unrolling) Preston and Sanjoy have been working on this, see: http://lists.cs.uiuc.edu/pipermail/llvmdev/2012-May/049769.html http://lists.cs.uiuc.edu/pipermail/llvmdev/2012-April/048812.html (and other related threads) -Hal On Thu, 24 May 2012 19:07:33 +0800 Cheng Liu <st.liucheng at gmail.com> wrote: > Hi, all > > When I have a loop unrolled, in the loop body, the same element of > the array may be accessed multiple times. > I see there are then load and store instructions and I can no longer > trace the data dependency directly by comparing > the...

Hi, all When I have a loop unrolled, in the loop body, the same element of the array may be accessed multiple times. I see there are then load and store instructions and I can no longer trace the data dependency directly by comparing the operands. So I am writing to see if anyone has done this or any methods in llvm that may help? Best regards, -- Cheng Liu PhD Candidate Department of

Launcher <st.liucheng at gmail.com> writes: > I am able to access the source operands of an instruction using either > getOperand() or op_iterator, However, I can't find any method available for > destination operand. Someone suggests that instruction itself can represent > the destination operand. &...

I am able to access the source operands of an instruction using either getOperand() or op_iterator, However, I can't find any method available for destination operand. Someone suggests that instruction itself can represent the destination operand. http://lists.cs.uiuc.edu/pipermail/llvmdev/2011-January/037518.html The getOperand() returns an unsigned value like 0x9063498, while I can't

Typical PHI instruction in LLVM goes like this: %P = phi i32* [%A, %BB1], [%B, %BB2] When I try to access all the source operands, only %A and %B are included. I checked the methods in instruction.h, but I didn't find any methods obtaining the label fields i.e. %BB1, %BB2. I notice that each label of a basic block is related with a value which can be referenced in 'br'

Sorry, I have typo in my question. I will be careful next time. This is how I obtain the source operands of an instruction. // ----------------------------------------------------------------- BasicBlock::iterator it; ... for(int k=0; k<OpNum; k++){ errs()<<it->getOperand(k)<<" "; } ... // -------------------------------------------------------------------- Also I

I have a loop fully unrolled and got the following store instruction. store i32 %add.3, i32* getelementptr inbounds ([20 x [20 x i32]]* @c, i32 0, i32 0, i32 0), align 4 I want to know exactly which element of the array that is going to be stored, which help me to transform the high level language to hardware. Take the instruction above as an example, I know the data is stored into c[0][0]. It