+2018-05-02 Jakub Jelinek <jakub@redhat.com>
+
+ PR target/85582
+ * config/i386/i386.md (*ashl<dwi>3_doubleword_mask,
+ *ashl<dwi>3_doubleword_mask_1, *<shift_insn><dwi>3_doubleword_mask,
+ *<shift_insn><dwi>3_doubleword_mask_1): In condition require that
+ the highest significant bit of the shift count mask is clear. In
+ check whether and[sq]i3 is needed verify that all significant bits
+ of the shift count other than the highest are set.
+
2018-05-02 Tom de Vries <tom@codesourcery.com>
PR libgomp/82428
(match_operand:SI 2 "register_operand" "c")
(match_operand:SI 3 "const_int_operand")) 0)))
(clobber (reg:CC FLAGS_REG))]
- "INTVAL (operands[3]) <= (<MODE_SIZE> * BITS_PER_UNIT) - 1
+ "(INTVAL (operands[3]) & (<MODE_SIZE> * BITS_PER_UNIT)) == 0
&& can_create_pseudo_p ()"
"#"
"&& 1"
operands[8] = GEN_INT (<MODE_SIZE> * BITS_PER_UNIT);
- if (INTVAL (operands[3]) < (<MODE_SIZE> * BITS_PER_UNIT) - 1)
+ if ((INTVAL (operands[3]) & ((<MODE_SIZE> * BITS_PER_UNIT) - 1))
+ != ((<MODE_SIZE> * BITS_PER_UNIT) - 1))
{
rtx tem = gen_reg_rtx (SImode);
emit_insn (gen_andsi3 (tem, operands[2], operands[3]));
(match_operand:QI 2 "register_operand" "c")
(match_operand:QI 3 "const_int_operand"))))
(clobber (reg:CC FLAGS_REG))]
- "INTVAL (operands[3]) <= (<MODE_SIZE> * BITS_PER_UNIT) - 1
+ "(INTVAL (operands[3]) & (<MODE_SIZE> * BITS_PER_UNIT)) == 0
&& can_create_pseudo_p ()"
"#"
"&& 1"
operands[8] = GEN_INT (<MODE_SIZE> * BITS_PER_UNIT);
- if (INTVAL (operands[3]) < (<MODE_SIZE> * BITS_PER_UNIT) - 1)
+ if ((INTVAL (operands[3]) & ((<MODE_SIZE> * BITS_PER_UNIT) - 1))
+ != ((<MODE_SIZE> * BITS_PER_UNIT) - 1))
{
rtx tem = gen_reg_rtx (QImode);
emit_insn (gen_andqi3 (tem, operands[2], operands[3]));
(match_operand:SI 2 "register_operand" "c")
(match_operand:SI 3 "const_int_operand")) 0)))
(clobber (reg:CC FLAGS_REG))]
- "INTVAL (operands[3]) <= (<MODE_SIZE> * BITS_PER_UNIT) - 1
+ "(INTVAL (operands[3]) & (<MODE_SIZE> * BITS_PER_UNIT)) == 0
&& can_create_pseudo_p ()"
"#"
"&& 1"
operands[8] = GEN_INT (<MODE_SIZE> * BITS_PER_UNIT);
- if (INTVAL (operands[3]) < (<MODE_SIZE> * BITS_PER_UNIT)-1)
+ if ((INTVAL (operands[3]) & ((<MODE_SIZE> * BITS_PER_UNIT) - 1))
+ != ((<MODE_SIZE> * BITS_PER_UNIT) - 1))
{
rtx tem = gen_reg_rtx (SImode);
emit_insn (gen_andsi3 (tem, operands[2], operands[3]));
(match_operand:QI 2 "register_operand" "c")
(match_operand:QI 3 "const_int_operand"))))
(clobber (reg:CC FLAGS_REG))]
- "INTVAL (operands[3]) <= (<MODE_SIZE> * BITS_PER_UNIT) - 1
+ "(INTVAL (operands[3]) & (<MODE_SIZE> * BITS_PER_UNIT)) == 0
&& can_create_pseudo_p ()"
"#"
"&& 1"
operands[8] = GEN_INT (<MODE_SIZE> * BITS_PER_UNIT);
- if (INTVAL (operands[3]) < (<MODE_SIZE> * BITS_PER_UNIT) - 1)
+ if ((INTVAL (operands[3]) & ((<MODE_SIZE> * BITS_PER_UNIT) - 1))
+ != ((<MODE_SIZE> * BITS_PER_UNIT) - 1))
{
rtx tem = gen_reg_rtx (QImode);
emit_insn (gen_andqi3 (tem, operands[2], operands[3]));
--- /dev/null
+/* PR target/85582 */
+
+#ifdef __SIZEOF_INT128__
+typedef __int128 S;
+typedef unsigned __int128 U;
+#else
+typedef long long S;
+typedef unsigned long long U;
+#endif
+
+__attribute__((noipa)) U
+f1 (U x, int y)
+{
+ return x << (y & -2);
+}
+
+__attribute__((noipa)) S
+f2 (S x, int y)
+{
+ return x >> (y & -2);
+}
+
+__attribute__((noipa)) U
+f3 (U x, int y)
+{
+ return x >> (y & -2);
+}
+
+int
+main ()
+{
+ U a = (U) 1 << (sizeof (U) * __CHAR_BIT__ - 7);
+ if (f1 (a, 5) != ((U) 1 << (sizeof (S) * __CHAR_BIT__ - 3)))
+ __builtin_abort ();
+ S b = (U) 0x101 << (sizeof (S) * __CHAR_BIT__ / 2 - 7);
+ if (f1 (b, sizeof (S) * __CHAR_BIT__ / 2) != (U) 0x101 << (sizeof (S) * __CHAR_BIT__ - 7))
+ __builtin_abort ();
+ if (f1 (b, sizeof (S) * __CHAR_BIT__ / 2 + 2) != (U) 0x101 << (sizeof (S) * __CHAR_BIT__ - 5))
+ __builtin_abort ();
+ S c = (U) 1 << (sizeof (S) * __CHAR_BIT__ - 1);
+ if ((U) f2 (c, 5) != ((U) 0x1f << (sizeof (S) * __CHAR_BIT__ - 5)))
+ __builtin_abort ();
+ if ((U) f2 (c, sizeof (S) * __CHAR_BIT__ / 2) != ((U) -1 << (sizeof (S) * __CHAR_BIT__ / 2 - 1)))
+ __builtin_abort ();
+ if ((U) f2 (c, sizeof (S) * __CHAR_BIT__ / 2 + 2) != ((U) -1 << (sizeof (S) * __CHAR_BIT__ / 2 - 3)))
+ __builtin_abort ();
+ U d = (U) 1 << (sizeof (S) * __CHAR_BIT__ - 1);
+ if (f3 (c, 5) != ((U) 0x1 << (sizeof (S) * __CHAR_BIT__ - 5)))
+ __builtin_abort ();
+ if (f3 (c, sizeof (S) * __CHAR_BIT__ / 2) != ((U) 1 << (sizeof (S) * __CHAR_BIT__ / 2 - 1)))
+ __builtin_abort ();
+ if (f3 (c, sizeof (S) * __CHAR_BIT__ / 2 + 2) != ((U) 1 << (sizeof (S) * __CHAR_BIT__ / 2 - 3)))
+ __builtin_abort ();
+ return 0;
+}