function.c (thread_prologue_and_epilogue_insns): Build a vector of unconverted simple...

function.c (thread_prologue_and_epilogue_insns): Build a vector of unconverted simple return blocks rather than trying to...

	* function.c (thread_prologue_and_epilogue_insns): Build a vector
	of unconverted simple return blocks rather than trying to
	recompute them later based on bb_flags bitmap tests.

From-SVN: r179619