PR target/23473
* arm.md (arm_load_pic_register): Change argument to the mask of
saved registers. Call thumb_find_work_register if we need a
scratch register on Thumb.
(arm_expand_prologue): Pass empty register set to
arm_load_pic_register.
(thumb_expand_prologue): Pass live_regs_mask directly to
arm_load_pic_register.
* arm-protos.h (arm_load_pic_register): Update prototype.
From-SVN: r103277
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