From 5664ecf49828edb20f53937ab2e417ba173fc903 Mon Sep 17 00:00:00 2001 From: claziss Date: Wed, 13 Jun 2018 08:54:09 +0000 Subject: [PATCH] [ARC] Update fma expansions. Accept at most a single constant for fma patterns. gcc/ 2018-03-21 Claudiu Zissulescu * config/arc/fpu.md (fmasf4): Force operand to register. (fnmasf4): Likewise. gcc/testsuite 2018-03-21 Claudiu Zissulescu * gcc.target/arc/fma-1.c: New test. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@261543 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/config/arc/fpu.md | 6 ++++++ gcc/testsuite/gcc.target/arc/fma-1.c | 13 +++++++++++++ 2 files changed, 19 insertions(+) create mode 100644 gcc/testsuite/gcc.target/arc/fma-1.c --- a/gcc/config/arc/fpu.md +++ b/gcc/config/arc/fpu.md @@ -64,6 +64,9 @@ tmp = gen_rtx_REG (SFmode, ACCL_REGNO); emit_move_insn (tmp, operands[3]); operands[3] = tmp; + if (!register_operand (operands[1], SFmode) + && !register_operand (operands[2], SFmode)) + operands[2] = force_reg (SFmode, operands[2]); }") (define_expand "fnmasf4" @@ -77,6 +80,9 @@ tmp = gen_rtx_REG (SFmode, ACCL_REGNO); emit_move_insn (tmp, operands[3]); operands[3] = tmp; + if (!register_operand (operands[1], SFmode) + && !register_operand (operands[2], SFmode)) + operands[2] = force_reg (SFmode, operands[2]); }") (define_insn "fmasf4_fpu" --- /dev/null +++ b/gcc/testsuite/gcc.target/arc/fma-1.c @@ -0,0 +1,13 @@ +/* { dg-do compile } */ +/* { dg-skip-if "FPU not available" { arc700 || arc6xx } } */ +/* { dg-options "-s -std=gnu11 -O2 -frounding-math -mfpu=fpus_all" } */ + +const float a, b = 7.8539818525e01; + +/* Check if the fma operation is generated correctly. */ + +int foo (void) +{ + return (float)3.0 * b + a; +} +/* { dg-final { scan-assembler "fsmadd" } } */