[LLVMdev] Undoing SSA and Phi instructions

[Surinder]

Hi,

I am emitting llvm bit code using

llvm-gcc -c -emit-llvm -O0 -o test.bc test.c

and then optimizing it with

opt -O3 -print-module test.bc

in order to obtain a dump of generated IR.


The resulting code has Phi nodes and is perhaps in SSA form.  I want
to undo the SSA form while retaining all the other optimizations.  Is
mem2reg the right optimization to be added after -O3, i.e.,

opt -O3 -mem2reg -print-module test.bc

will print the llvm in non-SSA form with no Phi nodes.

Surinder