From: YunQiang Su <yunqiang.su@cipunited.com>
Date: Fri, 26 Feb 2021 02:55:10 +0000 (-0700)
Subject: [PATCH v4 1/2] MIPS: unaligned load: use SImode for SUBREG if OK (PR98996) [PATCH... 
X-Git-Tag: basepoints/gcc-12~844
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9967bbfceddce755b18bdbecc6d0c56e994a05cc;p=thirdparty%2Fgcc.git

[PATCH v4 1/2] MIPS: unaligned load: use SImode for SUBREG if OK (PR98996) [PATCH v4 2/2] ada: add 128bit operation for MIPS N32 and N64

gcc/ChangeLog:

	PR target/98996
	* config/mips/mips.c (mips_expand_ext_as_unaligned_load):
	If TARGET_64BIT and dest is SUBREG, we check the width, if it
	equal to SImode, we use SImode operation, just like what we are
	doing for REG one.

gcc/ada/ChangeLog:

	PR ada/98996
	* Makefile.rtl: <mips*-*-linux*>
	add 128Bit operation file for MIPS N64 and N32 to
	LIBGNAT_TARGET_PAIRS and EXTRA_GNATRTL_NONTASKING_OBJS
---

diff --git a/gcc/ada/Makefile.rtl b/gcc/ada/Makefile.rtl
index 35faf13ea46a..987eff0abba0 100644
--- a/gcc/ada/Makefile.rtl
+++ b/gcc/ada/Makefile.rtl
@@ -2311,6 +2311,18 @@ ifeq ($(strip $(filter-out mips% linux%,$(target_cpu) $(target_os))),)
   s-tpopsp.adb<libgnarl/s-tpopsp__posix-foreign.adb \
   system.ads<libgnat/system-linux-mips.ads
 
+  ifeq ($(strip $(filter-out mips64% mipsisa64%,$(target_cpu))),)
+    ifneq ($(strip $(MULTISUBDIR)),/32)
+      LIBGNAT_TARGET_PAIRS += $(GNATRTL_128BIT_PAIRS)
+      EXTRA_GNATRTL_NONTASKING_OBJS += $(GNATRTL_128BIT_OBJS)
+    endif
+  else
+    ifneq ($(strip $(filter /64 /n32,$(MULTISUBDIR))),)
+      LIBGNAT_TARGET_PAIRS += $(GNATRTL_128BIT_PAIRS)
+      EXTRA_GNATRTL_NONTASKING_OBJS += $(GNATRTL_128BIT_OBJS)
+    endif
+  endif
+
   TOOLS_TARGET_PAIRS = indepsw.adb<indepsw-gnu.adb
 
   EXTRA_GNATRTL_TASKING_OBJS=s-linux.o
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 8bd2d29552ec..315545966f88 100644
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -8400,7 +8400,7 @@ mips_expand_ext_as_unaligned_load (rtx dest, rtx src, HOST_WIDE_INT width,
   /* If TARGET_64BIT, the destination of a 32-bit "extz" or "extzv" will
      be a DImode, create a new temp and emit a zero extend at the end.  */
   if (GET_MODE (dest) == DImode
-      && REG_P (dest)
+      && (REG_P (dest) || (SUBREG_P (dest) && !MEM_P (SUBREG_REG (dest))))
       && GET_MODE_BITSIZE (SImode) == width)
     {
       dest1 = dest;