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030186cabe
I've been investigating some (float)i == CST optimizations for match.pd, and noticed there's already a TODO comment in match.pd that's relatively easy to implement. When CST is a NaN, we only need to worry about exceptions with flag_trapping_math, and equality/inequality tests for sNaN only behave differently to qNaN with -fsignaling-nans. These issues are related to PR 57371 and PR 106805 in bugzilla. 2024-07-18 Roger Sayle <roger@nextmovesoftware.com> gcc/ChangeLog * match.pd ((FTYPE) N CMP CST): Only worry about exceptions with flag_trapping_math, and about signaling NaNs with HONOR_SNANS. gcc/testsuite/ChangeLog * c-c++-common/pr57371-4.c: Update comment. * c-c++-common/pr57371-5.c: Add missing testcases from pr57371-4.c and update for -fno-signaling-nans -fno-trapping-math. |
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