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From: frederic.recoules@univ-grenoble-alpes.fr
To: alsa-devel@alsa-project.org
Cc: "Frédéric Recoules" <frederic.recoules@orange.fr>
Subject: [PATCH v3 5/5] pcm_dmix assembly: give more freedom over the constraints
Date: Wed,  6 May 2020 19:19:24 +0200	[thread overview]
Message-ID: <20200506171924.2644-5-frederic.recoules@univ-grenoble-alpes.fr> (raw)
In-Reply-To: <20200506171924.2644-1-frederic.recoules@univ-grenoble-alpes.fr>

From: Frédéric Recoules <frederic.recoules@orange.fr>

Minor changes that could help the compiler to produce a
better (smaller/faster) code.

Signed-off-by: Frédéric Recoules <frederic.recoules@orange.fr>
---
 src/pcm/pcm_dmix_i386.h   | 30 +++++++++++++++---------------
 src/pcm/pcm_dmix_x86_64.h | 18 +++++++++---------
 2 files changed, 24 insertions(+), 24 deletions(-)

diff --git a/src/pcm/pcm_dmix_i386.h b/src/pcm/pcm_dmix_i386.h
index bd1d6644..8dcba3d8 100644
--- a/src/pcm/pcm_dmix_i386.h
+++ b/src/pcm/pcm_dmix_i386.h
@@ -149,13 +149,13 @@ static void MIX_AREAS_16(unsigned int size,
 #ifdef BOUNDED_EBX
 		"\tmovl %[old_ebx], %%ebx\n"	/* ebx is GOT pointer (-fPIC) */
 #endif
-		: [size] "+m" (size)
+		: [size] "+&rm" (size)
 #ifdef BOUNDED_EBX
 		  , [old_ebx] "=m" (old_ebx)
 #endif
 		: [dst] "m" (dst), [src] "m" (src), [sum] "m" (sum),
-		  [dst_step] "m" (dst_step),  [src_step] "m" (src_step),
-		  [sum_step] "m" (sum_step)
+		  [dst_step] "im" (dst_step),  [src_step] "im" (src_step),
+		  [sum_step] "im" (sum_step)
 		: "esi", "edi", "edx", "ecx", "eax", "memory", "cc"
 #ifndef BOUNDED_EBX
 		  , "ebx"
@@ -248,13 +248,13 @@ static void MIX_AREAS_16_MMX(unsigned int size,
 #ifdef BOUNDED_EBX
 		"\tmovl %[old_ebx], %%ebx\n"	/* ebx is GOT pointer (-fPIC) */
 #endif
-		: [size] "+m" (size)
+		: [size] "+&rm" (size)
 #ifdef BOUNDED_EBX
 		  , [old_ebx] "=m" (old_ebx)
 #endif
 		: [dst] "m" (dst), [src] "m" (src), [sum] "m" (sum),
-		  [dst_step] "m" (dst_step),  [src_step] "m" (src_step),
-		  [sum_step] "m" (sum_step)
+		  [dst_step] "im" (dst_step),  [src_step] "im" (src_step),
+		  [sum_step] "im" (sum_step)
 		: "esi", "edi", "edx", "ecx", "eax", "memory", "cc"
 #ifndef BOUNDED_EBX
 		  , "ebx"
@@ -376,13 +376,13 @@ static void MIX_AREAS_32(unsigned int size,
 #ifdef BOUNDED_EBX
 		"\tmovl %[old_ebx], %%ebx\n"	/* ebx is GOT pointer (-fPIC) */
 #endif
-		: [size] "+m" (size)
+		: [size] "+&rm" (size)
 #ifdef BOUNDED_EBX
 		  , [old_ebx] "=m" (old_ebx)
 #endif
 		: [dst] "m" (dst), [src] "m" (src), [sum] "m" (sum),
-		  [dst_step] "m" (dst_step),  [src_step] "m" (src_step),
-		  [sum_step] "m" (sum_step)
+		  [dst_step] "im" (dst_step),  [src_step] "im" (src_step),
+		  [sum_step] "im" (sum_step)
 		: "esi", "edi", "edx", "ecx", "eax", "memory", "cc"
 #ifndef BOUNDED_EBX
 		  , "ebx"
@@ -491,13 +491,13 @@ static void MIX_AREAS_24(unsigned int size,
 #ifdef BOUNDED_EBX
 		"\tmovl %[old_ebx], %%ebx\n"	/* ebx is GOT pointer (-fPIC) */
 #endif
-		: [size] "+m" (size)
+		: [size] "+&rm" (size)
 #ifdef BOUNDED_EBX
 		  , [old_ebx] "=m" (old_ebx)
 #endif
 		: [dst] "m" (dst), [src] "m" (src), [sum] "m" (sum),
-		  [dst_step] "m" (dst_step),  [src_step] "m" (src_step),
-		  [sum_step] "m" (sum_step)
+		  [dst_step] "im" (dst_step),  [src_step] "im" (src_step),
+		  [sum_step] "im" (sum_step)
 		: "esi", "edi", "edx", "ecx", "eax", "memory", "cc"
 #ifndef BOUNDED_EBX
 		  , "ebx"
@@ -599,13 +599,13 @@ static void MIX_AREAS_24_CMOV(unsigned int size,
 #ifdef BOUNDED_EBX
 		"\tmovl %[old_ebx], %%ebx\n"	/* ebx is GOT pointer (-fPIC) */
 #endif
-		: [size] "+m" (size)
+		: [size] "+&rm" (size)
 #ifdef BOUNDED_EBX
 		  , [old_ebx] "=m" (old_ebx)
 #endif
 		: [dst] "m" (dst), [src] "m" (src), [sum] "m" (sum),
-		  [dst_step] "m" (dst_step),  [src_step] "m" (src_step),
-		  [sum_step] "m" (sum_step)
+		  [dst_step] "im" (dst_step),  [src_step] "im" (src_step),
+		  [sum_step] "im" (sum_step)
 		: "esi", "edi", "edx", "ecx", "eax", "memory", "cc"
 #ifndef BOUNDED_EBX
 		  , "ebx"
diff --git a/src/pcm/pcm_dmix_x86_64.h b/src/pcm/pcm_dmix_x86_64.h
index fff07529..aef5d90c 100644
--- a/src/pcm/pcm_dmix_x86_64.h
+++ b/src/pcm/pcm_dmix_x86_64.h
@@ -121,13 +121,13 @@ static void MIX_AREAS_16(unsigned int size,
 #ifdef BOUNDED_RBX
 		"\tmovq %[old_rbx], %%rbx\n"
 #endif
-		: [size] "+m" (size)
+		: [size] "+&rm" (size)
 #ifdef BOUNDED_RBX
 		  , [old_rbx] "=m" (old_rbx)
 #endif
 	        : [dst] "m" (dst), [src] "m" (src), [sum] "m" (sum),
-		  [dst_step] "m" (dst_step),  [src_step] "m" (src_step),
-		  [sum_step] "m" (sum_step)
+		  [dst_step] "im" (dst_step),  [src_step] "im" (src_step),
+		  [sum_step] "im" (sum_step)
 		: "rsi", "rdi", "edx", "ecx", "eax", "memory", "cc"
 #ifndef BOUNDED_RBX
 		  , "rbx"
@@ -251,13 +251,13 @@ static void MIX_AREAS_32(unsigned int size,
 #ifdef BOUNDED_RBX
 		"\tmovq %[old_rbx], %%rbx\n"
 #endif
-		: [size] "+m" (size)
+		: [size] "+&rm" (size)
 #ifdef BOUNDED_RBX
 		  , [old_rbx] "=m" (old_rbx)
 #endif
 	        : [dst] "m" (dst), [src] "m" (src), [sum] "m" (sum),
-		  [dst_step] "m" (dst_step),  [src_step] "m" (src_step),
-		  [sum_step] "m" (sum_step)
+		  [dst_step] "im" (dst_step),  [src_step] "im" (src_step),
+		  [sum_step] "im" (sum_step)
 		: "rsi", "rdi", "edx", "ecx", "eax", "memory", "cc"
 #ifndef BOUNDED_RBX
 		  , "rbx"
@@ -363,13 +363,13 @@ static void MIX_AREAS_24(unsigned int size,
 #ifdef BOUNDED_RBX
 		"\tmovq %[old_rbx], %%rbx\n"
 #endif
-		: [size] "+m" (size)
+		: [size] "+&rm" (size)
 #ifdef BOUNDED_RBX
 		  , [old_rbx] "=m" (old_rbx)
 #endif
 	        : [dst] "m" (dst), [src] "m" (src), [sum] "m" (sum),
-		  [dst_step] "m" (dst_step),  [src_step] "m" (src_step),
-		  [sum_step] "m" (sum_step)
+		  [dst_step] "im" (dst_step),  [src_step] "im" (src_step),
+		  [sum_step] "im" (sum_step)
 		: "rsi", "rdi", "edx", "ecx", "eax", "memory", "cc"
 #ifndef BOUNDED_RBX
 		  , "rbx"
-- 
2.17.1


  parent reply	other threads:[~2020-05-06 17:22 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-06 17:19 [PATCH v3 1/5] pcm_dmix assembly: change the token by symbolic names frederic.recoules
2020-05-06 17:19 ` [PATCH v3 2/5] pcm_dmix assembly: fix the interface for safety frederic.recoules
2020-05-06 17:19 ` [PATCH v3 3/5] pcm_dmix assembly: fix the interface for safety (mmx) frederic.recoules
2020-05-06 17:19 ` [PATCH v3 4/5] pcm_dmix assembly: refactor the PIC mode frederic.recoules
2020-05-06 17:19 ` frederic.recoules [this message]
2020-05-06 20:36 ` [PATCH v3 1/5] pcm_dmix assembly: change the token by symbolic names Takashi Iwai
2020-05-14 17:33   ` FRÉDÉRIC RECOULES

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