Generate constant at start of loop, without UB

Generating the constants used for recording the edges taken for
condition coverage would trigger undefined behavior when an expression
had exactly 64 (== sizeof (1ULL)) conditions, as it would generate the
constant for the next iteration at the end of the loop body, even if there
was never a next iteration. By moving the check and constant generation
to the top of the loop and hoisting the increment flag there is no
opportunity for UB.

	PR middle-end/114627

gcc/ChangeLog:

	* tree-profile.cc (instrument_decisions): Generate constant
	at the start of loop.

0 files changed, 0 insertions, 0 deletions