Instruction does not dominate all uses!

[adslwy]

I meet this problem when running instrument, the problem comes from read file, and the llvm error looks like this: Instruction does not dominate all uses! %230 = invoke %"class.std::1::basic_istream"* @_ZNSt3113basic_istreamIcNS_11char_traitsIcEEErsERi(%"class.std::1::basic_istream"* %229, i32* %nonezero) to label %231 unwind label %237, !llfi_index !316 store %"class.std::1::basic_istream"* %230, %"class.std::1::basic_istream"\ %llfi_trace630 Broken module found, compilation aborted! 0 opt 0x0000000103c77778 llvm::sys::PrintStackTrace(sFILE*) + 40 1 opt 0x0000000103c77c30 SignalHandler(int) + 416 2 libsystem_platform.dylib 0x00007fff93b2deaa _sigtramp + 26 ......

The problem comes from below code in instrument: if retcode == 0:
execlist = [optbin, '-load', llfilib, '-profilingpass'] execlist2 = ['-o', proffile + _suffixOfIR(), llfi_indexed_file + _suffixOfIR()] print(execlist) execlist.extend(compileOptions) execlist.extend(execlist2) if options["readable"]: execlist.append("-S") retcode = execCompilation(exec list) and retcode return -4.

The platform I use is OS X 10.11, and I run with the simple install version of LLFI, another thing need to mention is that when generate makefile, I have to add std head file into the clang++ search path --stdlib=libc++ -isystem /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/ to make it compile. Otherwise, clang++ will not find

the code segment that I run met the above problem shows below `#include

include

include

using namespace std; int main(int argc, const char * argv[]) {

int rows; int cols ; int nonezero; //get the size of input matrix
//int n = 3;

typedef Eigen::Triplet<double> T;//use to store row, col, v_ij

vector<T> tripletList;  //use to store all the row

/***************beging to construct the matrix****************/

 fstream read;

 read.open("/Users/wuyue/Desktop/dataset/bcsstm22.mtx", ios::in);

int row=0 ; int col=0; float value=0; //get the value
read>>rows; read >> cols; read>>nonezero;

// cout<<"matrix has "<<rows<<" rows "<< cols<<" cols "<<nonezero<<" nonezero values"<<endl; }`

[abrahamchan]

I looked into this issue and I found that the problem is in the InstTracePass.

%7 = invoke %"class.std::basic_istream"* @_ZNSirsERi(%"class.std::basic_istream"* %6, i32* %rows) to label %8 unwind label %10, !llfi_index !11 store %"class.std::basic_istream"* %7, %"class.std::basic_istream"** %llfi_trace20

The instruction trace pass attempts to add a store instruction after an invoke instruction in the same block. However, invoke is a terminator instruction of basic blocks. This causes the error "Instruction does not dominate all uses!" to be thrown.

For the time being, we will remove instruction traces after invoke instructions.

[abrahamchan]

This has been addressed with commit 0d1226b.