From 30503f4ea491b9d6b9da00889155ecaa5d15cfb9 Mon Sep 17 00:00:00 2001 From: Richard Sandiford Date: Mon, 30 Sep 2019 16:21:14 +0000 Subject: [PATCH] Remove global call sets: regcprop.c This is a direct replacement of an existing test for fully and partially clobbered registers. 2019-09-30 Richard Sandiford gcc/ * regcprop.c (copyprop_hardreg_forward_1): Use the recorded mode of the register when deciding whether it is no longer available after a call. From-SVN: r276331 --- gcc/ChangeLog | 6 ++++++ gcc/regcprop.c | 11 +++++------ 2 files changed, 11 insertions(+), 6 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 24f73f819f5..d1534e472c5 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2019-09-30 Richard Sandiford + + * regcprop.c (copyprop_hardreg_forward_1): Use the recorded + mode of the register when deciding whether it is no longer + available after a call. + 2019-09-30 Richard Sandiford * recog.c: Include function-abi.h. diff --git a/gcc/regcprop.c b/gcc/regcprop.c index 0bdd6b91815..87cc394ecf3 100644 --- a/gcc/regcprop.c +++ b/gcc/regcprop.c @@ -1055,16 +1055,15 @@ copyprop_hardreg_forward_1 (basic_block bb, struct value_data *vd) function_abi callee_abi = insn_callee_abi (insn); for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) - if ((callee_abi.clobbers_full_reg_p (regno) - || (targetm.hard_regno_call_part_clobbered - (callee_abi.id (), regno, vd->e[regno].mode))) + if (vd->e[regno].mode != VOIDmode + && callee_abi.clobbers_reg_p (vd->e[regno].mode, regno) && (regno < set_regno || regno >= set_regno + set_nregs)) kill_value_regno (regno, 1, vd); /* If SET was seen in CALL_INSN_FUNCTION_USAGE, and SET_SRC - of the SET isn't in regs_invalidated_by_call hard reg set, - but instead among CLOBBERs on the CALL_INSN, we could wrongly - assume the value in it is still live. */ + of the SET isn't clobbered by CALLEE_ABI, but instead among + CLOBBERs on the CALL_INSN, we could wrongly assume the + value in it is still live. */ if (ksvd.ignore_set_reg) kill_clobbered_values (insn, vd); } -- 2.30.2