i386.c (print_reg): Warn for values of unsupported size in integer register.

	* config/i386/i386.c (print_reg): Warn for values of
	unsupported size in integer register.

testsuite/ChangeLog:

	* gcc.target/i386/invsize-2.c: New test.
	* gcc.target/i386/invsize-3.c: Ditto.
	* gcc.target/i386/invsize-4.c: Ditto.
	* gcc.target/i386/pr66274.c: Expect "unsuported size" warning.
	* gcc.target/i386/stackalign/asm-1.c: Ditto.

From-SVN: r245815

gcc/ChangeLog

+2017-03-01  Uros Bizjak  <ubizjak@gmail.com>
+
+	* config/i386/i386.c (print_reg): Warn for values of
+	unsupported size in integer register.
+
 2017-03-01  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
 	PR target/79439

gcc/config/i386/i386.c

@@ -17646,13 +17646,16 @@ print_reg (rtx x, int code, FILE *file)
 
   switch (msize)
     {
+    case 16:
+    case 12:
     case 8:
+      if (GENERAL_REGNO_P (regno) && msize > GET_MODE_SIZE (word_mode))
+	warning (0, "unsupported size for integer register");
+      /* FALLTHRU */
     case 4:
       if (LEGACY_INT_REGNO_P (regno))
-	putc (msize == 8 && TARGET_64BIT ? 'r' : 'e', file);
+	putc (msize > 4 && TARGET_64BIT ? 'r' : 'e', file);
       /* FALLTHRU */
-    case 16:
-    case 12:
     case 2:
     normal:
       reg = hi_reg_name[regno];
@@ -17661,7 +17664,7 @@ print_reg (rtx x, int code, FILE *file)
       if (regno >= ARRAY_SIZE (qi_reg_name))
 	goto normal;
       if (!ANY_QI_REGNO_P (regno))
-	error ("unsupported size for integer register in 32-bit mode");
+	error ("unsupported size for integer register");
       reg = qi_reg_name[regno];
       break;
     case 0:

gcc/testsuite/ChangeLog

+2017-03-01  Uros Bizjak  <ubizjak@gmail.com>
+
+	* gcc.target/i386/invsize-2.c: New test.
+	* gcc.target/i386/invsize-3.c: Ditto.
+	* gcc.target/i386/invsize-4.c: Ditto.
+	* gcc.target/i386/pr66274.c: Expect "unsuported size" warning.
+	* gcc.target/i386/stackalign/asm-1.c: Ditto.
+
 2017-03-01  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
 	PR target/79439

gcc/testsuite/gcc.target/i386/invsize-1.c

 /* { dg-do compile { target ia32 } } */
+/* { dg-options "" } */
 
 void foo (char x)
 {

gcc/testsuite/gcc.target/i386/invsize-2.c

+/* { dg-do compile { target ia32 } } */
+/* { dg-options "" } */
+
+void foo (long long x)
+{
+  __asm__ volatile ("# %0" : : "r" (x));
+} /* { dg-warning "unsupported size" }  */

gcc/testsuite/gcc.target/i386/invsize-3.c

+/* { dg-do compile } */
+/* { dg-options "" } */
+
+void foo (long double x)
+{
+  __asm__ volatile ("# %0" : : "r" (x));
+} /* { dg-warning "unsupported size" }  */

gcc/testsuite/gcc.target/i386/invsize-4.c

+/* { dg-do compile { target int128 } } */
+/* { dg-options "" } */
+
+void foo (__int128 x)
+{
+  __asm__ volatile ("# %0" : : "r" (x));
+} /* { dg-warning "unsupported size" }  */

gcc/testsuite/gcc.target/i386/pr66274.c

@@ -3,7 +3,7 @@
 
 void f()
 {
-  asm ("push %0" : : "r" ((unsigned long long) 456));
-}
+  asm ("push %0" : : "r" ((unsigned long long) 456 >> 32));
+} /* { dg-warning "unsupported size" }  */
 
-/* { dg-final { scan-assembler-not "push %r" } } */
+/* { dg-final { scan-assembler-not "push\[ \t]+%r" } } */

gcc/testsuite/gcc.target/i386/stackalign/asm-1.c

@@ -4,4 +4,4 @@
 
 /* This case is to detect a compile time regression introduced in stack
    branch development. */
-void f(){asm("%0"::"r"(1.5F));}void g(){asm("%0"::"r"(1.5));}
+void f(){asm("%0"::"r"(1.5F));}void g(){asm("%0"::"r"(1.5));} /* { dg-warning "unsupported size" }  */