From 3e4a5f5485c15381c67a940d5da449242ace9029 Mon Sep 17 00:00:00 2001 From: Claudiu Zissulescu Date: Wed, 25 Jul 2018 16:31:04 +0200 Subject: [PATCH] [ARC] Fix uncache attribute. gcc/ 2018-05-09 Claudiu Zissulescu * config/arc/arc.c (compact_memory_operand_p): Check for uncached accesses as well. (arc_is_uncached_mem_p): uncached applies to both the variable and the pointer. testsuite/ 2018-05-09 Claudiu Zissulescu * gcc.target/arc/uncached-1.c: New test. * gcc.target/arc/uncached-2.c: Likewise. From-SVN: r262970 --- gcc/ChangeLog | 7 ++++++ gcc/config/arc/arc.c | 40 ++++++++++++++++++++----------- gcc/testsuite/ChangeLog | 5 ++++ gcc/testsuite/gcc.target/arc/uncached-1.c | 11 +++++++++ gcc/testsuite/gcc.target/arc/uncached-2.c | 9 +++++++ 5 files changed, 58 insertions(+), 14 deletions(-) create mode 100644 gcc/testsuite/gcc.target/arc/uncached-1.c create mode 100644 gcc/testsuite/gcc.target/arc/uncached-2.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0c0c644..db3d91b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,12 @@ 2018-07-25 Claudiu Zissulescu + * config/arc/arc.c (compact_memory_operand_p): Check for uncached + accesses as well. + (arc_is_uncached_mem_p): uncached applies to both the variable and + the pointer. + +2018-07-25 Claudiu Zissulescu + * config/arc/arc.h (ADDITIONAL_REGISTER_NAMES): Add additional register names. diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c index 4cbf7ab..c186e02 100644 --- a/gcc/config/arc/arc.c +++ b/gcc/config/arc/arc.c @@ -10420,6 +10420,10 @@ compact_memory_operand_p (rtx op, machine_mode mode, if (MEM_VOLATILE_P (op) && !TARGET_VOLATILE_CACHE_SET) return false; + /* likewise for uncached types. */ + if (arc_is_uncached_mem_p (op)) + return false; + if (mode == VOIDmode) mode = GET_MODE (op); @@ -10703,28 +10707,36 @@ arc_handle_uncached_attribute (tree *node, bool arc_is_uncached_mem_p (rtx pat) { - tree attrs; - tree ttype; - struct mem_attrs *refattrs; + tree attrs = NULL_TREE; + tree addr; if (!MEM_P (pat)) return false; /* Get the memory attributes. */ - refattrs = MEM_ATTRS (pat); - if (!refattrs - || !refattrs->expr) + addr = MEM_EXPR (pat); + if (!addr) return false; - /* Get the type declaration. */ - ttype = TREE_TYPE (refattrs->expr); - if (!ttype) - return false; + /* Get the attributes. */ + if (TREE_CODE (addr) == MEM_REF) + { + attrs = TYPE_ATTRIBUTES (TREE_TYPE (addr)); + if (lookup_attribute ("uncached", attrs)) + return true; - /* Get the type attributes. */ - attrs = TYPE_ATTRIBUTES (ttype); - if (lookup_attribute ("uncached", attrs)) - return true; + attrs = TYPE_ATTRIBUTES (TREE_TYPE (TREE_OPERAND (addr, 0))); + if (lookup_attribute ("uncached", attrs)) + return true; + } + + /* For COMPONENT_REF, use the FIELD_DECL from tree operand 1. */ + if (TREE_CODE (addr) == COMPONENT_REF) + { + attrs = TYPE_ATTRIBUTES (TREE_TYPE (TREE_OPERAND (addr, 1))); + if (lookup_attribute ("uncached", attrs)) + return true; + } return false; } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index af40567..76f935a 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2018-07-25 Claudiu Zissulescu + + * gcc.target/arc/uncached-1.c: New test. + * gcc.target/arc/uncached-2.c: Likewise. + 2018-07-24 Martin Sebor PR tree-optimization/86622 diff --git a/gcc/testsuite/gcc.target/arc/uncached-1.c b/gcc/testsuite/gcc.target/arc/uncached-1.c new file mode 100644 index 0000000..7a6bade --- /dev/null +++ b/gcc/testsuite/gcc.target/arc/uncached-1.c @@ -0,0 +1,11 @@ +/* { dg-do compile } */ + +volatile __attribute__((uncached)) int * status = + (volatile __attribute__((uncached)) int *) 0x04 ; + +int get_stat (void) +{ + return *status; +} + +/* { dg-final { scan-assembler-times "ld\.di" 1 } } */ diff --git a/gcc/testsuite/gcc.target/arc/uncached-2.c b/gcc/testsuite/gcc.target/arc/uncached-2.c new file mode 100644 index 0000000..89eed32 --- /dev/null +++ b/gcc/testsuite/gcc.target/arc/uncached-2.c @@ -0,0 +1,9 @@ +/* { dg-do compile } */ + +void clkgen_switch(unsigned int base, unsigned int offset, int val) +{ + volatile unsigned int __attribute__ ((uncached)) *dest = + (volatile unsigned int __attribute__ ((uncached)) *) (base + offset); + *dest = val; +} +/* { dg-final { scan-assembler-times "st\.di" 1 } } */ -- 2.7.4