[target/116104] Fix more rtl-checking failures in ext-dce

More enable-rtl-checking fixes for ext-dce.  Very similar to the one recently
posted, this time covering more of the shift ops.

I checked all instances of CONSTANT_P guarding [U]INTVAL and fixed all that
looked wrong.  I also created a dummy assembler/linker so that I could run the
GCC testsuite on gcn and verified that wasn't tripping any rtl-checking bugs in
ext-dce anymore.

Obviously this has also gone through x86 bootstrap and regression tested.

Pushing to the trunk.

	pr target/116104
gcc/
	* ext-dce.cc (carry_backpropagate): Change more guards of [U]INTVAL to
	test CONST_INT_P rather than CONSTANT_P, fixing rtl-checking failures.

diff --git a/gcc/ext-dce.cc b/gcc/ext-dce.cc
index f7b0eb114180ba750c77f5ddfb10b4c7269181f1..97a664271183bb08849cccff000352947b1b686a 100644 (file)
--- a/gcc/ext-dce.cc
+++ b/gcc/ext-dce.cc
@@ -501,7 +501,7 @@ carry_backpropagate (unsigned HOST_WIDE_INT mask, enum rtx_code code, rtx x)
     /* We propagate for the shifted operand, but not the shift
        count.  The count is handled specially.  */
     case LSHIFTRT:
-      if (CONSTANT_P (XEXP (x, 1))
+      if (CONST_INT_P (XEXP (x, 1))
          && known_lt (UINTVAL (XEXP (x, 1)), GET_MODE_BITSIZE (mode)))
        return mmask & (mask << INTVAL (XEXP (x, 1)));
       return mmask;
@@ -509,7 +509,7 @@ carry_backpropagate (unsigned HOST_WIDE_INT mask, enum rtx_code code, rtx x)
     /* We propagate for the shifted operand, but not the shift
        count.  The count is handled specially.  */
     case ASHIFTRT:
-      if (CONSTANT_P (XEXP (x, 1))
+      if (CONST_INT_P (XEXP (x, 1))
          && known_lt (UINTVAL (XEXP (x, 1)), GET_MODE_BITSIZE (mode)))
        {
          HOST_WIDE_INT sign = 0;
@@ -526,7 +526,7 @@ carry_backpropagate (unsigned HOST_WIDE_INT mask, enum rtx_code code, rtx x)
        return 0;
       if (XEXP (x, 1) == const1_rtx)
        return mmask;
-      if (CONSTANT_P (XEXP (x, 1)))
+      if (CONST_INT_P (XEXP (x, 1)))
        {
          if (pow2p_hwi (INTVAL (XEXP (x, 1))))
            return mmask & (mask << (GET_MODE_BITSIZE (mode).to_constant ()
@@ -549,7 +549,7 @@ carry_backpropagate (unsigned HOST_WIDE_INT mask, enum rtx_code code, rtx x)
        count.  The count is handled specially.  */
     case SS_ASHIFT:
     case US_ASHIFT:
-      if (CONSTANT_P (XEXP (x, 1))
+      if (CONST_INT_P (XEXP (x, 1))
          && UINTVAL (XEXP (x, 1)) < GET_MODE_BITSIZE (mode).to_constant ())
        {
          return ((mmask & ~((unsigned HOST_WIDE_INT)mmask