backport: re PR middle-end/89281 (gcc/optabs.c:3901:30: runtime error: shift exponent...

	Backported from mainline
	2019-02-13  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/89281
	* optabs.c (prepare_cmp_insn): Use UINTVAL (size) instead of
	INTVAL (size), compare it to GET_MODE_MASK instead of
	1 << GET_MODE_BITSIZE.

From-SVN: r275108

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4bfe52f5237703c2ad5a1024e4da1c493a194c6f..29db4f3b39f6df049a188e2b6e30c98d7d20d083 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,6 +1,13 @@
 2019-08-30  Jakub Jelinek  <jakub@redhat.com>
 
        Backported from mainline
+       2019-02-13  Jakub Jelinek  <jakub@redhat.com>
+
+       PR middle-end/89281
+       * optabs.c (prepare_cmp_insn): Use UINTVAL (size) instead of
+       INTVAL (size), compare it to GET_MODE_MASK instead of
+       1 << GET_MODE_BITSIZE.
+
        2019-02-09  Jakub Jelinek  <jakub@redhat.com>
 
        PR middle-end/89246

diff --git a/gcc/optabs.c b/gcc/optabs.c
index d3624fdf9ef960f3ed23c6f3bb33ccef1cae96a6..ba4b9ad1bd19f264600d33dd23bc0d8cb65f9491 100644 (file)
--- a/gcc/optabs.c
+++ b/gcc/optabs.c
@@ -3811,7 +3811,7 @@ prepare_cmp_insn (rtx x, rtx y, enum rtx_code comparison, rtx size,
 
          /* Must make sure the size fits the insn's mode.  */
          if ((CONST_INT_P (size)
-              && INTVAL (size) >= (1 << GET_MODE_BITSIZE (cmp_mode)))
+              && UINTVAL (size) > GET_MODE_MASK (cmp_mode))
              || (GET_MODE_BITSIZE (GET_MODE (size))
                  > GET_MODE_BITSIZE (cmp_mode)))
            continue;