[gcc/devel/ranger] PRU: Remove TARGET_HARD_REGNO_CALL_PART_CLOBBERED

[Aldy Hernandez]

https://gcc.gnu.org/g:1ea8de4c8c23791c2c1ca231cc3461a4a9fc1efb

commit 1ea8de4c8c23791c2c1ca231cc3461a4a9fc1efb
Author: Dimitar Dimitrov <dimitar@dinux.eu>
Date:   Sun Sep 15 18:01:22 2019 +0300

    PRU: Remove TARGET_HARD_REGNO_CALL_PART_CLOBBERED
    
    Per clarification in [1], macro is supposed to check for partial
    clobbering of single HW registers. Since PRU declares only 8-bit
    HW registers, and ABI does not define individual bit clobbering,
    it is safe to remove the implementation.
    
    [1] https://gcc.gnu.org/ml/gcc-patches/2019-09/msg00778.html
    
    gcc/ChangeLog:
    
    2020-05-05  Dimitar Dimitrov  <dimitar@dinux.eu>
    
            * config/pru/pru.c (pru_hard_regno_call_part_clobbered): Remove.
            (TARGET_HARD_REGNO_CALL_PART_CLOBBERED): Remove.
    
    Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>

Diff:
---
 gcc/ChangeLog        |  5 +++++
 gcc/config/pru/pru.c | 34 ----------------------------------
 2 files changed, 5 insertions(+), 34 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b3c8b731570..6b4d53da318 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2020-05-05  Dimitar Dimitrov  <dimitar@dinux.eu>
+
+	* config/pru/pru.c (pru_hard_regno_call_part_clobbered): Remove.
+	(TARGET_HARD_REGNO_CALL_PART_CLOBBERED): Remove.
+
 2020-05-05  Dimitar Dimitrov  <dimitar@dinux.eu>
 
 	* config/pru/pru.h: Mark R3.w0 as caller saved.
diff --git a/gcc/config/pru/pru.c b/gcc/config/pru/pru.c
index 45b18ed6fe4..a715f6b07ce 100644
--- a/gcc/config/pru/pru.c
+++ b/gcc/config/pru/pru.c
@@ -556,37 +556,6 @@ pru_hard_regno_scratch_ok (unsigned int regno)
 }
 
 
-/* Implement TARGET_HARD_REGNO_CALL_PART_CLOBBERED.  */
-
-static bool
-pru_hard_regno_call_part_clobbered (unsigned, unsigned regno,
-				    machine_mode mode)
-{
-  HARD_REG_SET caller_saved_set;
-  HARD_REG_SET callee_saved_set;
-
-  CLEAR_HARD_REG_SET (caller_saved_set);
-  CLEAR_HARD_REG_SET (callee_saved_set);
-
-  /* r0 and r1 are caller saved.  */
-  add_range_to_hard_reg_set (&caller_saved_set, 0, 2 * 4);
-
-  add_range_to_hard_reg_set (&caller_saved_set, FIRST_ARG_REGNUM,
-			     LAST_ARG_REGNUM + 1 - FIRST_ARG_REGNUM);
-
-  /* Treat SP as callee saved.  */
-  add_range_to_hard_reg_set (&callee_saved_set, STACK_POINTER_REGNUM, 4);
-
-  /* r3 to r13 are callee saved.  */
-  add_range_to_hard_reg_set (&callee_saved_set, FIRST_CALLEE_SAVED_REGNUM,
-			     LAST_CALEE_SAVED_REGNUM + 1
-			     - FIRST_CALLEE_SAVED_REGNUM);
-
-  return overlaps_hard_reg_set_p (caller_saved_set, mode, regno)
-	 && overlaps_hard_reg_set_p (callee_saved_set, mode, regno);
-}
-
-
 /* Worker function for `HARD_REGNO_RENAME_OK'.
    Return nonzero if register OLD_REG can be renamed to register NEW_REG.  */
 
@@ -2935,9 +2904,6 @@ pru_unwind_word_mode (void)
 
 #undef  TARGET_HARD_REGNO_SCRATCH_OK
 #define TARGET_HARD_REGNO_SCRATCH_OK pru_hard_regno_scratch_ok
-#undef  TARGET_HARD_REGNO_CALL_PART_CLOBBERED
-#define TARGET_HARD_REGNO_CALL_PART_CLOBBERED \
-  pru_hard_regno_call_part_clobbered
 
 #undef TARGET_FUNCTION_ARG
 #define TARGET_FUNCTION_ARG pru_function_arg