From: Richard Earnshaw <rearnsha@arm.com>
Date: Fri, 24 Oct 2003 08:47:18 +0000 (+0000)
Subject: arm.c (note_invalid_constants): Try to extract the constant pool value using avoid_co... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=244b1afb66fc094953097790a6ea6a52d8321177;p=gcc.git

arm.c (note_invalid_constants): Try to extract the constant pool value using avoid_constant_pool_reference...

* arm.c (note_invalid_constants): Try to extract the constant
pool value using avoid_constant_pool_reference; only use
get_pool_constant if that returns the original reference.

From-SVN: r72883
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4b59697d372..794eb0190d2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2003-10-24  Richard Earnshaw  <rearnsha@arm.com>
+
+	* arm.c (note_invalid_constants): Try to extract the constant
+	pool value using avoid_constant_pool_reference; only use
+	get_pool_constant if that returns the original reference.
+
 2003-10-24  Jan Hubicka  <jh@suse.cz>
 
 	PR c++/12624
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 8a7997e30f3..2b1bf7a1389 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -6894,9 +6894,23 @@ note_invalid_constants (rtx insn, HOST_WIDE_INT address, int do_pushes)
 		   && CONSTANT_POOL_ADDRESS_P (XEXP (op, 0)))
 	    {
 	      if (do_pushes)
-		push_minipool_fix (insn, address, recog_data.operand_loc[opno],
-				   recog_data.operand_mode[opno],
-				   get_pool_constant (XEXP (op, 0)));
+		{
+		  rtx cop = avoid_constant_pool_reference (op);
+
+		  /* Casting the address of something to a mode narrower
+		     than a word can cause avoid_constant_pool_reference()
+		     to return the pool reference itself.  That's no good to
+		     us here.  Lets just hope that we can use the 
+		     constant pool value directly.  */
+		  if (op == cop)
+		    op = get_pool_constant (XEXP (op, 0));
+		  else
+		    op = cop;
+
+		  push_minipool_fix (insn, address,
+				     recog_data.operand_loc[opno],
+				     recog_data.operand_mode[opno], op);
+		}
 
 	      result = true;
 	    }