Execution trace trunction

A method comprising:

• receiving, by a processor, an execution trace of a plurality of building blocks of computer code including a head building block at which the execution trace starts and a tail building block at which the execution trace ends, the building blocks executable in a sequence from the head building block to the tail building block within the execution trace, the execution trace including a loop encompassing one or more of the plurality of building blocks that are executable more than one time within the sequence and that include a loop header building block at which the loop is entered;
• and,
• truncating the execution trace, by the processor, at a particular building block of the plurality of building blocks of the execution trace, such that the particular building block becomes the tail building block of the execution trace, where the particular building block corresponds to the loop header building block of the loop,
• wherein the execution trace is one of a plurality of compilation units on which basis a trace-based compiler computer program generates an executable version of the computer code at least by compiling the compilation units.

A computer program product comprising:

• a computer-readable storage medium having computer-readable code embodied therein, the computer-readable code executable by a processor and comprising:
• first computer-readable code to receive an execution trace of a plurality of building blocks of computer code including a head building block at which the execution trace starts and a tail building block at which the execution trace ends, the building blocks executable in a sequence from the heading building block to the tail building block within the execution trace;
• and,
• second computer-readable code to truncate the execution trace at a particular building block of the plurality of building blocks of the execution trace, such that the particular building block becomes the tail building block of the execution trace,
• wherein the execution trace is one of a plurality of compilation units on which basis a trace-based compiler computer program generates an executable version of the computer code at least by compiling the compilation units,
• and wherein one or more of:
• the particular building block corresponds to a head building block of an additional execution trace, and the execution trace prior to truncation has a length corresponding to a predetermined maximum allowable trace length, such that recording of the execution trace terminated as a result of the execution trace reaching the predetermined maximum allowable trace length;
• the particular building block corresponds to a loop header building block of a loop within the execution trace and at which the loop is entered, the loop encompassing one or more of the plurality of building blocks that are executable more than one time within the sequence and that includes the loop header building block.