Hi, I'm updating a port from 3.4.6 to 4.1.1. In 3.4.6, I hadn't implemented movmemsi patterns, but the compiler could still inline memcpy's (and also strcpys where source string is a const) by itself. After updating to 4.1.1, calls to memcpy are always generated.
I've had a bash at implementing movmemsi, but in a test case that does a strcpy (dest, "const"), it appears the 4th parameter (alignment) is always 1, and doing a MEM_ALIGN on the source operand results in 8, despite the fact I have implemented the CONSTANT_ALIGNMENT and DATA_ALIGNMENT macros to ensure that STRING_CSTs and QImode ARRAY_TYPEs get implemented on a BITS_PER_WORD boundary (If I look at the assembler output, then that shows the string being aligned as expected on a word boundary). So, two questions: any idea why 4.1.1 is no longer able to automatically inline memcpys and why is the source operand for movmemsi not know to be as widely aligned as it actually is? Cheers, Jon
