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>
(cherry picked from commit 66b38349273525dfb86f0f74d6c928abdbf7154f)

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 6ba7e4bdbee38eef07a9cf928dd6f79185bd2ca1..bfd77ead1de37c58c312208b6547b72d85f97dca 100644 (file)
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -4983,7 +4983,7 @@
   "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")
@@ -27625,7 +27625,7 @@
 {
   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")])