International Business Machines Corporation

Miho Ogishima

Andrew Dunshea

Jos Manuel Accapadi

Suzanne Shi

A computer implemented method, apparatus, and computer usable program product for utilizing instruction trace registers. In one embodiment, a value in a target processor register in a plurality of processor registers is updated in response to executing an instruction associated with program code. In response to updating the value in the target processor register, an address for the instruction is copied from an instruction address register into an instruction trace register associated with the target processor register. The instruction trace register holds the address of the instruction that updated the value stored in the target processor register.

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Pflugerville, TX, United States of America

Miho Ogishima