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gcc/
PR tree-optimization/23234
* tree-ssa-math-opts.c (place_reciprocal): New enum.
(execute_cse_reciprocals_1): Replace the 'phi' argument with an
argument of the new enum.
(execute_cse_reciprocals): Add reciprocals for function arguments
on the unique successor edge of the entry block. Update other calls
to execute_cse_reciprocals_1.
testsuite/
PR tree-optimization/23234
* gcc.dg/tree-ssa/pr23234.c: New test.
From-SVN: r102895
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parameter)
2005-08-01 Richard Guenther <rguenther@suse.de>
PR tree-optimization/23133
* tree-ssa-math-opts.c (execute_cse_reciprocals): Walk
current functions parameter decls to find defs to cse
reciprocals of.
From-SVN: r102628
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spurious division by zero with -funsafe-math-optimizations (instead of -ftrapping-math))
2005-08-01 Richard Guenther <rguenther@suse.de>
PR tree-optimization/23109
* tree-ssa-math-opts.c (execute_cse_reciprocals_1):
If trapping math is in effect, use post-dominator information
to check if we'd in any case reach a trapping point before
doing the reciprocal insertion.
(execute_cse_reciprocals): Compute post-dominators, if necessary.
* tree-ssa-loop-im.c (determine_invariantness_stmt): RDIV
expressions are invariant only if trapping math is not in effect.
From-SVN: r102627
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From-SVN: r101317
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From-SVN: r99828
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