From bad00732aa98fdd074843c0868d2ca54f192691a Mon Sep 17 00:00:00 2001 From: Kyrylo Tkachov Date: Fri, 15 Jan 2016 17:30:12 +0000 Subject: [PATCH] [AArch64] Handle CSEL of zero_extended operands in rtx costs * config/aarch64/aarch64.c (aarch64_if_then_else_costs): Handle CSEL of zero_extended registers. From-SVN: r232442 --- gcc/ChangeLog | 5 +++++ gcc/config/aarch64/aarch64.c | 6 ++++++ 2 files changed, 11 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index edfc0b4a46e..d3a632646d4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2016-01-15 Kyrylo Tkachov + + * config/aarch64/aarch64.c (aarch64_if_then_else_costs): Handle + CSEL of zero_extended registers. + 2016-01-15 Kyrylo Tkachov * config/aarch64/aarch64.c (aarch64_rtx_costs, COMPARE case): diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index fee917f135b..73ef7e5a554 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -6145,6 +6145,12 @@ aarch64_if_then_else_costs (rtx op0, rtx op1, rtx op2, int *cost, bool speed) || GET_CODE (op1) == NOT || (GET_CODE (op1) == PLUS && XEXP (op1, 1) == const1_rtx)) op1 = XEXP (op1, 0); + else if (GET_CODE (op1) == ZERO_EXTEND && GET_CODE (op2) == ZERO_EXTEND) + { + /* CSEL with zero-extension (*cmovdi_insn_uxtw). */ + op1 = XEXP (op1, 0); + op2 = XEXP (op2, 0); + } *cost += rtx_cost (op1, VOIDmode, IF_THEN_ELSE, 1, speed); *cost += rtx_cost (op2, VOIDmode, IF_THEN_ELSE, 2, speed);