From 796f5220c808bc37adbd1081476589ab1a5d7ac3 Mon Sep 17 00:00:00 2001 From: Andre Vieira Date: Tue, 8 Mar 2022 17:46:40 +0000 Subject: [PATCH] arm: MVE: Relax addressing modes for full loads and stores This patch relaxes the addressing modes for the mve full load and stores (by full loads and stores I mean non-widening or narrowing loads and stores resp). The code before was requiring a LO_REGNUM for these, where this is only a requirement if the load is widening or the store narrowing. gcc/ChangeLog: PR target/104790 * config/arm/arm.h (MVE_STN_LDW_MODE): New MACRO. * config/arm/arm.cc (mve_vector_mem_operand): Relax constraint on base register for non widening loads or narrowing stores. --- gcc/config/arm/arm.cc | 25 +++++++++++++------------ gcc/config/arm/arm.h | 4 ++++ 2 files changed, 17 insertions(+), 12 deletions(-) diff --git a/gcc/config/arm/arm.cc b/gcc/config/arm/arm.cc index 14b6c80..e062361 100644 --- a/gcc/config/arm/arm.cc +++ b/gcc/config/arm/arm.cc @@ -13521,27 +13521,28 @@ mve_vector_mem_operand (machine_mode mode, rtx op, bool strict) case E_V16QImode: case E_V8QImode: case E_V4QImode: - if (abs (val) <= 127) - return (reg_no < LAST_ARM_REGNUM && reg_no != SP_REGNUM) - || reg_no >= FIRST_PSEUDO_REGISTER; - return FALSE; + if (abs (val) > 127) + return FALSE; + break; case E_V8HImode: case E_V8HFmode: case E_V4HImode: case E_V4HFmode: - if (val % 2 == 0 && abs (val) <= 254) - return reg_no <= LAST_LO_REGNUM - || reg_no >= FIRST_PSEUDO_REGISTER; - return FALSE; + if (val % 2 != 0 || abs (val) > 254) + return FALSE; + break; case E_V4SImode: case E_V4SFmode: - if (val % 4 == 0 && abs (val) <= 508) - return (reg_no < LAST_ARM_REGNUM && reg_no != SP_REGNUM) - || reg_no >= FIRST_PSEUDO_REGISTER; - return FALSE; + if (val % 4 != 0 || abs (val) > 508) + return FALSE; + break; default: return FALSE; } + return reg_no >= FIRST_PSEUDO_REGISTER + || (MVE_STN_LDW_MODE (mode) + ? reg_no <= LAST_LO_REGNUM + : (reg_no < LAST_ARM_REGNUM && reg_no != SP_REGNUM)); } return FALSE; } diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h index ef7b66f..f479540 100644 --- a/gcc/config/arm/arm.h +++ b/gcc/config/arm/arm.h @@ -1099,6 +1099,10 @@ extern const int arm_arch_cde_coproc_bits[]; ((MODE) == V2DImode ||(MODE) == V4SImode || (MODE) == V8HImode \ || (MODE) == V16QImode) +/* Modes used in MVE's narrowing stores or widening loads. */ +#define MVE_STN_LDW_MODE(MODE) \ + ((MODE) == V4QImode || (MODE) == V8QImode || (MODE) == V4HImode) + #define VALID_MVE_SF_MODE(MODE) \ ((MODE) == V8HFmode || (MODE) == V4SFmode || (MODE) == V2DFmode) -- 2.7.4