Backport from trunk r244894.
2016-01-25 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
PR target/79145
* config/arm/arm.md (xordi3): Force constant operand into a register
for TARGET_IWMMXT.
gcc/testsuite/
Backport from trunk r244894.
2016-01-25 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
PR target/79145
* gcc.target/arm/pr79145.c: New test.
Change-Id: Ia1ee8c855c4324fc3226fbc04bd485911c2c6289
(xor:DI (match_operand:DI 1 "s_register_operand" "")
(match_operand:DI 2 "arm_xordi_operand" "")))]
"TARGET_32BIT"
- ""
+ {
+ /* The iWMMXt pattern for xordi3 accepts only register operands but we want
+ to reuse this expander for all TARGET_32BIT targets so just force the
+ constants into a register. Unlike for the anddi3 and iordi3 there are
+ no NEON instructions that take an immediate. */
+ if (TARGET_IWMMXT && !REG_P (operands[2]))
+ operands[2] = force_reg (DImode, operands[2]);
+ }
)
(define_insn_and_split "*xordi3_insn"
--- /dev/null
+/* { dg-do compile } */
+/* { dg-skip-if "Test is specific to the iWMMXt" { arm*-*-* } { "-mcpu=*" } { "-mcpu=iwmmxt" } } */
+/* { dg-skip-if "Test is specific to the iWMMXt" { arm*-*-* } { "-mabi=*" } { "-mabi=iwmmxt" } } */
+/* { dg-skip-if "Test is specific to the iWMMXt" { arm*-*-* } { "-march=*" } { "-march=iwmmxt" } } */
+/* { dg-skip-if "Test is specific to ARM mode" { arm*-*-* } { "-mthumb" } { "" } } */
+/* { dg-require-effective-target arm32 } */
+/* { dg-require-effective-target arm_iwmmxt_ok } */
+/* { dg-options "-mcpu=iwmmxt" } */
+
+int
+main (void)
+{
+ volatile long long t1;
+ t1 ^= 0x55;
+ return 0;
+}