From: Chung-Ju Wu <jasonwucj@gmail.com>
Date: Sat, 19 May 2018 15:10:08 +0000 (+0000)
Subject: [NDS32] New option -minline-asm-r15.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b28c01ab9aa51aaa9329af2bdb581afd67a6a639;p=gcc.git

[NDS32] New option -minline-asm-r15.

gcc/
	* config/nds32/nds32.c
	(nds32_md_asm_adjust): Consider flag_inline_asm_r15 variable.
	* config/nds32/nds32.opt (minline-asm-r15): New option.

From-SVN: r260400
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fb259255a16..97aa4e782f2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-05-19  Chung-Ju Wu  <jasonwucj@gmail.com>
+
+	* config/nds32/nds32.c
+	(nds32_md_asm_adjust): Consider flag_inline_asm_r15 variable.
+	* config/nds32/nds32.opt (minline-asm-r15): New option.
+
 2018-05-19  Chung-Ju Wu  <jasonwucj@gmail.com>
 
 	* common/config/nds32/nds32-common.c (TARGET_DEFAULT_TARGET_FLAGS): Add
diff --git a/gcc/config/nds32/nds32.c b/gcc/config/nds32/nds32.c
index b705ae6a77a..632a54477c3 100644
--- a/gcc/config/nds32/nds32.c
+++ b/gcc/config/nds32/nds32.c
@@ -4066,8 +4066,11 @@ nds32_md_asm_adjust (vec<rtx> &outputs ATTRIBUTE_UNUSED,
 		     vec<const char *> &constraints ATTRIBUTE_UNUSED,
 		     vec<rtx> &clobbers, HARD_REG_SET &clobbered_regs)
 {
-  clobbers.safe_push (gen_rtx_REG (SImode, TA_REGNUM));
-  SET_HARD_REG_BIT (clobbered_regs, TA_REGNUM);
+  if (!flag_inline_asm_r15)
+    {
+      clobbers.safe_push (gen_rtx_REG (SImode, TA_REGNUM));
+      SET_HARD_REG_BIT (clobbered_regs, TA_REGNUM);
+    }
   return NULL;
 }
 
diff --git a/gcc/config/nds32/nds32.opt b/gcc/config/nds32/nds32.opt
index 9e481549d9d..a9cd72c422b 100644
--- a/gcc/config/nds32/nds32.opt
+++ b/gcc/config/nds32/nds32.opt
@@ -446,3 +446,7 @@ Always save $lp in the stack.
 munaligned-access
 Target Report Var(flag_unaligned_access) Init(0)
 Enable unaligned word and halfword accesses to packed data.
+
+minline-asm-r15
+Target Report Var(flag_inline_asm_r15) Init(0)
+Allow use r15 for inline ASM.