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The following testcase ICEs, because for TFmode the particular subtraction pattern (*subtf3) is not enabled with the given options. Using expand_simple_binop instead of emitting the subtraction by hand just moves the ICE one insn later, NEG of ABS is not then recognized, etc., but ultimately the problem is that when rs6000_emit_cmove is called for floating point operand mode (and earlier condition ensures that in that case compare_mode is also floating point), the expander makes sure the operand mode is SFDF, but for the comparison mode nothing checks it, yet there is just one *fsel* pattern with 2 separate SFDF iterators. The following patch fixes it by giving up if compare_mode is not SFmode or DFmode. 2020-01-21 Jakub Jelinek <jakub@redhat.com> PR target/93073 * config/rs6000/rs6000.c (rs6000_emit_cmove): If using fsel, punt for compare_mode other than SFmode or DFmode. * gcc.target/powerpc/pr93073.c: New test.
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