v2: https://gcc.gnu.org/pipermail/gcc-patches/2021-September/579976.html Changes in v3: * Do not propagate bias along tcc_references. * Call get_rank () before checking biased_names. * Add loop-carried phis to biased_names. * Move the propagate_bias_p () call outside of the loop. * Test with -ftree-vectorize, adjust expectations.
Ilya Leoshkevich (3): reassoc: Do not bias loop-carried PHIs early reassoc: Propagate PHI_LOOP_BIAS along single uses reassoc: Test rank biasing gcc/passes.def | 4 +- gcc/testsuite/gcc.dg/tree-ssa/reassoc-46.c | 7 ++ gcc/testsuite/gcc.dg/tree-ssa/reassoc-46.h | 33 ++++++ gcc/testsuite/gcc.dg/tree-ssa/reassoc-47.c | 9 ++ gcc/testsuite/gcc.dg/tree-ssa/reassoc-48.c | 9 ++ gcc/testsuite/gcc.dg/tree-ssa/reassoc-49.c | 11 ++ gcc/testsuite/gcc.dg/tree-ssa/reassoc-50.c | 10 ++ gcc/testsuite/gcc.dg/tree-ssa/reassoc-51.c | 11 ++ gcc/tree-ssa-reassoc.c | 125 +++++++++++++++------ 9 files changed, 180 insertions(+), 39 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/reassoc-46.c create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/reassoc-46.h create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/reassoc-47.c create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/reassoc-48.c create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/reassoc-49.c create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/reassoc-50.c create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/reassoc-51.c -- 2.31.1
