lower-bitint: Avoid nested casts in muldiv/float operands [PR112941]

Multiplication/division/modulo/float operands are handled by libgcc calls
and so need to be passed as array of limbs with precision argument,
using handle_operand_addr.  That code can't deal with more than one cast,
so the following patch avoids merging those cases.
.MUL_OVERFLOW calls use the same code, but we don't actually try to merge
the operands in that case already.

2023-12-21  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/112941
	* gimple-lower-bitint.cc (gimple_lower_bitint): Disallow merging
	a cast with multiplication, division or conversion to floating point
	if rhs1 of the cast is result of another single use cast in the same
	bb.

	* gcc.dg/bitint-56.c: New test.
	* gcc.dg/bitint-57.c: New test.

0 files changed, 0 insertions, 0 deletions