diff mbox series

x86: Use explicit shift count in double-precision shifts

Message ID 20240405155615.5066-1-hjl.tools@gmail.com
State New
Headers show
Series x86: Use explicit shift count in double-precision shifts | expand

Commit Message

H.J. Lu April 5, 2024, 3:56 p.m. UTC 
Don't use implicit shift count in double-precision shifts in AT&T syntax
since they aren't in Intel SDM.  Keep the 's' modifier for backward
compatibility with inline asm statements.

	PR target/114590
	* config/i386/i386.md (x86_64_shld): Use explicit shift count in
	AT&T syntax.
	(x86_64_shld_ndd): Likewise.
	(x86_shld): Likewise.
	(x86_shld_ndd): Likewise.
	(x86_64_shrd): Likewise.
	(x86_64_shrd_ndd): Likewise.
	(x86_shrd): Likewise.
	(x86_shrd_ndd): Likewise.
---
 gcc/config/i386/i386.md | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

Comments

Uros Bizjak April 6, 2024, 8:20 a.m. UTC | #1 
On Fri, Apr 5, 2024 at 5:56 PM H.J. Lu <hjl.tools@gmail.com> wrote:
>
> Don't use implicit shift count in double-precision shifts in AT&T syntax
> since they aren't in Intel SDM.  Keep the 's' modifier for backward
> compatibility with inline asm statements.
>
>         PR target/114590
>         * config/i386/i386.md (x86_64_shld): Use explicit shift count in
>         AT&T syntax.
>         (x86_64_shld_ndd): Likewise.
>         (x86_shld): Likewise.
>         (x86_shld_ndd): Likewise.
>         (x86_64_shrd): Likewise.
>         (x86_64_shrd_ndd): Likewise.
>         (x86_shrd): Likewise.
>         (x86_shrd_ndd): Likewise.

OK.

Thanks,
Uros.

> ---
>  gcc/config/i386/i386.md | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
> index 6ac401154e4..bb2c72f3473 100644
> --- a/gcc/config/i386/i386.md
> +++ b/gcc/config/i386/i386.md
> @@ -14503,7 +14503,7 @@ (define_insn "x86_64_shld"
>                               (and:QI (match_dup 2) (const_int 63)))) 0)))
>     (clobber (reg:CC FLAGS_REG))]
>    "TARGET_64BIT"
> -  "shld{q}\t{%s2%1, %0|%0, %1, %2}"
> +  "shld{q}\t{%2, %1, %0|%0, %1, %2}"
>    [(set_attr "type" "ishift")
>     (set_attr "prefix_0f" "1")
>     (set_attr "mode" "DI")
> @@ -14524,7 +14524,7 @@ (define_insn "x86_64_shld_ndd"
>                               (and:QI (match_dup 3) (const_int 63)))) 0)))
>     (clobber (reg:CC FLAGS_REG))]
>    "TARGET_APX_NDD"
> -  "shld{q}\t{%s3%2, %1, %0|%0, %1, %2, %3}"
> +  "shld{q}\t{%3, %2, %1, %0|%0, %1, %2, %3}"
>    [(set_attr "type" "ishift")
>     (set_attr "mode" "DI")])
>
> @@ -14681,7 +14681,7 @@ (define_insn "x86_shld"
>                               (and:QI (match_dup 2) (const_int 31)))) 0)))
>     (clobber (reg:CC FLAGS_REG))]
>    ""
> -  "shld{l}\t{%s2%1, %0|%0, %1, %2}"
> +  "shld{l}\t{%2, %1, %0|%0, %1, %2}"
>    [(set_attr "type" "ishift")
>     (set_attr "prefix_0f" "1")
>     (set_attr "mode" "SI")
> @@ -14703,7 +14703,7 @@ (define_insn "x86_shld_ndd"
>                               (and:QI (match_dup 3) (const_int 31)))) 0)))
>     (clobber (reg:CC FLAGS_REG))]
>    "TARGET_APX_NDD"
> -  "shld{l}\t{%s3%2, %1, %0|%0, %1, %2, %3}"
> +  "shld{l}\t{%3, %2, %1, %0|%0, %1, %2, %3}"
>    [(set_attr "type" "ishift")
>     (set_attr "mode" "SI")])
>
> @@ -15792,7 +15792,7 @@ (define_insn "x86_64_shrd"
>                               (and:QI (match_dup 2) (const_int 63)))) 0)))
>     (clobber (reg:CC FLAGS_REG))]
>    "TARGET_64BIT"
> -  "shrd{q}\t{%s2%1, %0|%0, %1, %2}"
> +  "shrd{q}\t{%2, %1, %0|%0, %1, %2}"
>    [(set_attr "type" "ishift")
>     (set_attr "prefix_0f" "1")
>     (set_attr "mode" "DI")
> @@ -15813,7 +15813,7 @@ (define_insn "x86_64_shrd_ndd"
>                               (and:QI (match_dup 3) (const_int 63)))) 0)))
>     (clobber (reg:CC FLAGS_REG))]
>    "TARGET_APX_NDD"
> -  "shrd{q}\t{%s3%2, %1, %0|%0, %1, %2, %3}"
> +  "shrd{q}\t{%3, %2, %1, %0|%0, %1, %2, %3}"
>    [(set_attr "type" "ishift")
>     (set_attr "mode" "DI")])
>
> @@ -15971,7 +15971,7 @@ (define_insn "x86_shrd"
>                               (and:QI (match_dup 2) (const_int 31)))) 0)))
>     (clobber (reg:CC FLAGS_REG))]
>    ""
> -  "shrd{l}\t{%s2%1, %0|%0, %1, %2}"
> +  "shrd{l}\t{%2, %1, %0|%0, %1, %2}"
>    [(set_attr "type" "ishift")
>     (set_attr "prefix_0f" "1")
>     (set_attr "mode" "SI")
> @@ -15993,7 +15993,7 @@ (define_insn "x86_shrd_ndd"
>                               (and:QI (match_dup 3) (const_int 31)))) 0)))
>     (clobber (reg:CC FLAGS_REG))]
>    "TARGET_APX_NDD"
> -  "shrd{l}\t{%s3%2, %1, %0|%0, %1, %2, %3}"
> +  "shrd{l}\t{%3, %2, %1, %0|%0, %1, %2, %3}"
>    [(set_attr "type" "ishift")
>     (set_attr "mode" "SI")])
>
> --
> 2.44.0
>
diff mbox series

Patch

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 6ac401154e4..bb2c72f3473 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -14503,7 +14503,7 @@  (define_insn "x86_64_shld"
 			      (and:QI (match_dup 2) (const_int 63)))) 0)))
    (clobber (reg:CC FLAGS_REG))]
   "TARGET_64BIT"
-  "shld{q}\t{%s2%1, %0|%0, %1, %2}"
+  "shld{q}\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "type" "ishift")
    (set_attr "prefix_0f" "1")
    (set_attr "mode" "DI")
@@ -14524,7 +14524,7 @@  (define_insn "x86_64_shld_ndd"
 			      (and:QI (match_dup 3) (const_int 63)))) 0)))
    (clobber (reg:CC FLAGS_REG))]
   "TARGET_APX_NDD"
-  "shld{q}\t{%s3%2, %1, %0|%0, %1, %2, %3}"
+  "shld{q}\t{%3, %2, %1, %0|%0, %1, %2, %3}"
   [(set_attr "type" "ishift")
    (set_attr "mode" "DI")])
 
@@ -14681,7 +14681,7 @@  (define_insn "x86_shld"
 			      (and:QI (match_dup 2) (const_int 31)))) 0)))
    (clobber (reg:CC FLAGS_REG))]
   ""
-  "shld{l}\t{%s2%1, %0|%0, %1, %2}"
+  "shld{l}\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "type" "ishift")
    (set_attr "prefix_0f" "1")
    (set_attr "mode" "SI")
@@ -14703,7 +14703,7 @@  (define_insn "x86_shld_ndd"
 			      (and:QI (match_dup 3) (const_int 31)))) 0)))
    (clobber (reg:CC FLAGS_REG))]
   "TARGET_APX_NDD"
-  "shld{l}\t{%s3%2, %1, %0|%0, %1, %2, %3}"
+  "shld{l}\t{%3, %2, %1, %0|%0, %1, %2, %3}"
   [(set_attr "type" "ishift")
    (set_attr "mode" "SI")])
 
@@ -15792,7 +15792,7 @@  (define_insn "x86_64_shrd"
 			      (and:QI (match_dup 2) (const_int 63)))) 0)))
    (clobber (reg:CC FLAGS_REG))]
   "TARGET_64BIT"
-  "shrd{q}\t{%s2%1, %0|%0, %1, %2}"
+  "shrd{q}\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "type" "ishift")
    (set_attr "prefix_0f" "1")
    (set_attr "mode" "DI")
@@ -15813,7 +15813,7 @@  (define_insn "x86_64_shrd_ndd"
 			      (and:QI (match_dup 3) (const_int 63)))) 0)))
    (clobber (reg:CC FLAGS_REG))]
   "TARGET_APX_NDD"
-  "shrd{q}\t{%s3%2, %1, %0|%0, %1, %2, %3}"
+  "shrd{q}\t{%3, %2, %1, %0|%0, %1, %2, %3}"
   [(set_attr "type" "ishift")
    (set_attr "mode" "DI")])
 
@@ -15971,7 +15971,7 @@  (define_insn "x86_shrd"
 			      (and:QI (match_dup 2) (const_int 31)))) 0)))
    (clobber (reg:CC FLAGS_REG))]
   ""
-  "shrd{l}\t{%s2%1, %0|%0, %1, %2}"
+  "shrd{l}\t{%2, %1, %0|%0, %1, %2}"
   [(set_attr "type" "ishift")
    (set_attr "prefix_0f" "1")
    (set_attr "mode" "SI")
@@ -15993,7 +15993,7 @@  (define_insn "x86_shrd_ndd"
 			      (and:QI (match_dup 3) (const_int 31)))) 0)))
    (clobber (reg:CC FLAGS_REG))]
   "TARGET_APX_NDD"
-  "shrd{l}\t{%s3%2, %1, %0|%0, %1, %2, %3}"
+  "shrd{l}\t{%3, %2, %1, %0|%0, %1, %2, %3}"
   [(set_attr "type" "ishift")
    (set_attr "mode" "SI")])