From: Andi Kleen <a...@linux.intel.com>
The earlier PTWRITE builtin definition was unnecessarily restrictive,
only allowing register input to PTWRITE. The instruction actually
supports memory operands too, so allow that too.
gcc/:
2018-11-15 Andi Kleen <a...@linux.intel.com>
* config/i386/i386.md: Allow memory operands to ptwrite.
---
gcc/config/i386/i386.md | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 44db8ac954c..9c359c0ca04 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -19501,7 +19501,7 @@
(set_attr "prefix_extra" "2")])
(define_insn "ptwrite<mode>"
- [(unspec_volatile [(match_operand:SWI48 0 "register_operand" "r")]
+ [(unspec_volatile [(match_operand:SWI48 0 "nonimmediate_operand" "rm")]
UNSPECV_PTWRITE)]
"TARGET_PTWRITE"
"ptwrite\t%0"
--
2.19.1
