x86-64: Use `movsxd` to perform SI-to-DI extension in Intel syntax

Although there's no possibility of ambiguity, Intel manual says the mnemonic
for DWORD-to-QWORD sign-extension operation should be MOVSXD. Some assemblers
(GNU AS, NASM) also overload MOVSX, but some others don't accept MOVSX (LLVM,
MASM, YASM in NASM mode) and require MOVSXD.

This mnemonic was introduced in r0-34259-g123bf9e3f4056d in 2001, and has not
been updated ever since.

gcc/ChangeLog:

	PR target/119079
	* config/i386/i386.md: Use `movsxd` to perform SI-to-DI extension in Intel
	syntax.

Signed-off-by: LIU Hao <lh_mouse@126.com>

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 8a3e336bee66bde7c357a5e92c0816bd460a57ea..218377a1770356554f9b9266c3a9584b556222d2 100644 (file)
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -4982,7 +4982,7 @@
   "TARGET_64BIT"
   "@
    {cltq|cdqe}
-   movs{lq|x}\t{%1, %0|%0, %1}"
+   movs{lq|xd}\t{%1, %0|%0, %1}"
   [(set_attr "type" "imovx")
    (set_attr "mode" "DI")
    (set_attr "prefix_0f" "0")
@@ -27859,7 +27859,7 @@
 {
   output_asm_insn ("mov{<imodesuffix>}\t{%3, %<k>1|%<k>1, %3}", operands);
   output_asm_insn ("mov{<imodesuffix>}\t{%<k>1, %0|%0, %<k>1}", operands);
-  return "movs{lq|x}\t{%2, %1|%1, %2}";
+  return "movs{lq|xd}\t{%2, %1|%1, %2}";
 }
   [(set_attr "type" "multi")
    (set_attr "length" "24")])