re PR target/46934 (gcc ICE: error: unrecognizable insn: in extract_insn, at recog.c:2109)

2011-03-23  Chung-Lin Tang  <cltang@codesourcery.com>

	PR target/46934
	* config/arm/arm.md (casesi): Use the gen_int_mode() function
	to subtract lower bound instead of GEN_INT().

	testsuite/
	* gcc.target/arm/pr46934.c: New.

From-SVN: r171379

gcc/ChangeLog

+2011-03-23  Chung-Lin Tang  <cltang@codesourcery.com>
+
+	PR target/46934
+	* config/arm/arm.md (casesi): Use the gen_int_mode() function
+	to subtract lower bound instead of GEN_INT().
+
 2011-03-23  Jonathan Wakely  <jwakely.gcc@gmail.com>
 
 	PR other/48179

gcc/config/arm/arm.md

@@ -8354,7 +8354,8 @@
 	rtx reg = gen_reg_rtx (SImode);
 
 	emit_insn (gen_addsi3 (reg, operands[0],
-			       GEN_INT (-INTVAL (operands[1]))));
+			       gen_int_mode (-INTVAL (operands[1]),
+			       		     SImode)));
 	operands[0] = reg;
       }
 

gcc/testsuite/ChangeLog

+2011-03-23  Chung-Lin Tang  <cltang@codesourcery.com>
+
+	* gcc.target/arm/pr46934.c: New.
+
 2011-03-23  Ian Lance Taylor  <iant@google.com>
 
 	* go.test/go-test.exp (errchk): Ignore lines containing ////.

gcc/testsuite/gcc.target/arm/pr46934.c

+/* { dg-do compile } */
+/* { dg-options "-march=armv5te -mthumb -Os" }  */
+/* { dg-require-effective-target arm_thumb1_ok } */
+
+int caller (unsigned int reg_type)
+{
+  switch (reg_type)
+    {
+    case 0x80000000:
+      return (int)foo();
+
+    case 0x80000003:
+      return (int) bar();
+
+    case 0x80000001:
+      return (int) baz();
+
+    case 0x80000004:
+      return (int) fooz();
+    }
+}