From patchwork Sun Aug  1 08:36:15 2010
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Subject: [ARM] Fix PR45094
Date: Sat, 31 Jul 2010 22:36:15 -0000
From: Yao Qi <yao@codesourcery.com>
X-Patchwork-Id: 60443
Message-Id: <20100801083614.GA2569@qiyaows>
To: gcc-patches@gcc.gnu.org

This patch fixes generated wrong instructions reported in PR45094,
which is caused by typo.

Tested on arm-unknown-linux-gnueabi, fixes the new test.

OK for mainline?

ChangeLog:
gcc/
	PR target/45094
	* config/arm/arm.c (output_move_double): Fix typo generating 
	instructions ('ldr'->'str').

gcc/testsuite/

	PR target/45094
	* gcc.target/arm/pr45094.c: New test.


gcc/
	PR target/45094
	* config/arm/arm.c (output_move_double): Fix typo generating 
	instructions ('ldr'->'str').

gcc/testsuite/

	PR target/45094
	* gcc.target/arm/pr45094.c: New test.

Index: config/arm/arm.c
===================================================================
--- config/arm/arm.c	(revision 162792)
+++ config/arm/arm.c	(working copy)
@@ -12570,13 +12570,13 @@
 	    {
 	      if (GET_CODE (XEXP (operands[0], 0)) == PRE_MODIFY)
 		{
-		  output_asm_insn ("ldr%?\t%0, [%1, %2]!", otherops);
-		  output_asm_insn ("ldr%?\t%H0, [%1, #4]", otherops);
+		  output_asm_insn ("str%?\t%0, [%1, %2]!", otherops);
+		  output_asm_insn ("strr%?\t%H0, [%1, #4]", otherops);
 		}
 	      else
 		{
-		  output_asm_insn ("ldr%?\t%H0, [%1, #4]", otherops);
-		  output_asm_insn ("ldr%?\t%0, [%1], %2", otherops);
+		  output_asm_insn ("str%?\t%H0, [%1, #4]", otherops);
+		  output_asm_insn ("str%?\t%0, [%1], %2", otherops);
 		}
 	    }
 	  else if (GET_CODE (XEXP (operands[0], 0)) == PRE_MODIFY)
Index: testsuite/gcc.target/arm/pr45094.c
===================================================================
--- testsuite/gcc.target/arm/pr45094.c	(revision 0)
+++ testsuite/gcc.target/arm/pr45094.c	(revision 0)
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mcpu=cortex-a8 -mfpu=neon -mfloat-abi=softfp" } */
+
+long long buffer[32];
+
+void __attribute__((noinline)) f(long long *p, int n)
+{
+  while (--n >= 0) {
+   *p = 1;
+        p += 32;
+    }
+}
+
+int main(void)
+{
+    f(buffer, 1);
+    return !buffer[0];
+}
+
+/* { dg-final { scan-assembler "str" } } */