commit adba85bb63a45d7d668501c11bdf9772cc00b7b8
author Georg-Johann Lay <avr@gjlay.de> Wed May 08 17:56:05 2024 +0200
committer Georg-Johann Lay <avr@gjlay.de> Thu May 09 10:05:39 2024 +0200
tree f2472a23e2b18f20f866603d8497a58acbe49f1f
parent 44d84db11ab724c34a8b1f8c0e06da1cc78439a2

AVR: target/114981 - Support __builtin_powi[l] / __powidf2.

This supports __powidf2 by means of a double wrapper for already
existing f7_powi (renamed to __f7_powi by f7-renames.h).
It tweaks the implementation so that it does not perform trivial
multiplications with 1.0 any more, but instead uses a move.
It also fixes the last statement of f7_powi, which was wrong.
Notice that f7_powi was unused until now.

	PR target/114981
libgcc/config/avr/libf7/
	* libf7-common.mk (F7_ASM_PARTS): Add D_powi
	* libf7-asm.sx (F7MOD_D_powi_, __powidf2): New module and function.
	* libf7.c (f7_powi): Fix last (wrong) statement.
	Tweak trivial multiplications with 1.0.

gcc/testsuite/
	* gcc.target/avr/pr114981-powil.c: New test.

(cherry picked from commit de4eea7d7ea86e54843507c68d6672eca9d8c7bb)