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* [PATCH] x86: Remove .tfloat usage
@ 2022-09-26 16:53 Adhemerval Zanella
  2022-09-26 19:00 ` Noah Goldstein
  2022-09-27  8:18 ` Fangrui Song
  0 siblings, 2 replies; 7+ messages in thread
From: Adhemerval Zanella @ 2022-09-26 16:53 UTC (permalink / raw)
  To: libc-alpha

Some compiler does not support it (such as clang integrated assembly)
neither gcc emits it.
---
 sysdeps/i386/fpu/e_atanh.S    |  3 ++-
 sysdeps/i386/fpu/e_atanhf.S   |  3 ++-
 sysdeps/i386/fpu/e_atanhl.S   |  3 ++-
 sysdeps/i386/fpu/s_asinhl.S   |  3 ++-
 sysdeps/i386/fpu/s_cbrtl.S    | 44 +++++++++++++++++++++--------------
 sysdeps/i386/fpu/s_expm1.S    |  3 ++-
 sysdeps/i386/fpu/s_expm1f.S   |  3 ++-
 sysdeps/i386/fpu/s_log1pl.S   |  3 ++-
 sysdeps/x86_64/fpu/s_log1pl.S |  3 ++-
 9 files changed, 42 insertions(+), 26 deletions(-)

diff --git a/sysdeps/i386/fpu/e_atanh.S b/sysdeps/i386/fpu/e_atanh.S
index 6e4fef06b2..a7fd9a60fa 100644
--- a/sysdeps/i386/fpu/e_atanh.S
+++ b/sysdeps/i386/fpu/e_atanh.S
@@ -33,7 +33,8 @@ one:	.double 1.0
 limit:	.double 0.29
 	ASM_SIZE_DIRECTIVE(limit)
 	.type ln2_2,@object
-ln2_2:	.tfloat 0.3465735902799726547086160
+ln2_2:	.quad  0xb17217f7d1cf79ac /* 0.3465735902799726547086160L */
+	.short 0x3ffd
 	ASM_SIZE_DIRECTIVE(ln2_2)
 
 DEFINE_DBL_MIN
diff --git a/sysdeps/i386/fpu/e_atanhf.S b/sysdeps/i386/fpu/e_atanhf.S
index 146196eced..4ab1fa31fb 100644
--- a/sysdeps/i386/fpu/e_atanhf.S
+++ b/sysdeps/i386/fpu/e_atanhf.S
@@ -34,7 +34,8 @@ limit:	.double 0.29
 	ASM_SIZE_DIRECTIVE(limit)
 	.align ALIGNARG(4)
 	.type ln2_2,@object
-ln2_2:	.tfloat 0.3465735902799726547086160
+ln2_2:	.quad   0xb17217f7d1cf79ac  /* 0.3465735902799726547086160L  */
+	.short  0x3ffd
 	ASM_SIZE_DIRECTIVE(ln2_2)
 
 DEFINE_FLT_MIN
diff --git a/sysdeps/i386/fpu/e_atanhl.S b/sysdeps/i386/fpu/e_atanhl.S
index 1f6eb7ce48..df3f1b8f84 100644
--- a/sysdeps/i386/fpu/e_atanhl.S
+++ b/sysdeps/i386/fpu/e_atanhl.S
@@ -39,7 +39,8 @@ limit:	.double 0.29
 	ASM_SIZE_DIRECTIVE(limit)
 	.align ALIGNARG(4)
 	.type ln2_2,@object
-ln2_2:	.tfloat 0.3465735902799726547086160
+ln2_2:	.quad   0xb17217f7d1cf79ac  /* 0.3465735902799726547086160  */
+	.short  0x3ffd
 	ASM_SIZE_DIRECTIVE(ln2_2)
 
 #ifdef PIC
diff --git a/sysdeps/i386/fpu/s_asinhl.S b/sysdeps/i386/fpu/s_asinhl.S
index bd442c6a09..f4f420d060 100644
--- a/sysdeps/i386/fpu/s_asinhl.S
+++ b/sysdeps/i386/fpu/s_asinhl.S
@@ -23,7 +23,8 @@
 
 	.align ALIGNARG(4)
 	.type huge,@object
-huge:	.tfloat 1e+4930
+huge:	.quad   0x89b634e7456ffa1d  /* 1e+4930  */
+	.short  0x7ff8
 	ASM_SIZE_DIRECTIVE(huge)
 	.align ALIGNARG(4)
 	/* Please note that we use double value for 1.0.  This number
diff --git a/sysdeps/i386/fpu/s_cbrtl.S b/sysdeps/i386/fpu/s_cbrtl.S
index 8802164706..935ac20530 100644
--- a/sysdeps/i386/fpu/s_cbrtl.S
+++ b/sysdeps/i386/fpu/s_cbrtl.S
@@ -23,55 +23,63 @@
 
         .align ALIGNARG(4)
         .type f8,@object
-f8:	.tfloat 0.161617097923756032
+f8:	.quad   0xa57ef3d83a542839  /* 0.161617097923756032  */
+	.short  0x3ffc
 	ASM_SIZE_DIRECTIVE(f8)
         .align ALIGNARG(4)
         .type f7,@object
-f7:	.tfloat -0.988553671195413709
+f7:	.quad   0xfd11da7820029014  /* -0.988553671195413709  */
+	.short  0xbffe
 	ASM_SIZE_DIRECTIVE(f7)
         .align ALIGNARG(4)
         .type f6,@object
-f6:	.tfloat 2.65298938441952296
+f6:	.quad   0xa9ca93fcade3b4ad  /* 2.65298938441952296  */
+	.short  0x4000
 	ASM_SIZE_DIRECTIVE(f6)
         .align ALIGNARG(4)
         .type f5,@object
-f5:	.tfloat -4.11151425200350531
+f5:	.quad   0x839186562c931c34  /* -4.11151425200350531  */
+	.short  0xc001
 	ASM_SIZE_DIRECTIVE(f5)
         .align ALIGNARG(4)
         .type f4,@object
-f4:	.tfloat 4.09559907378707839
+f4:	.quad   0x830f25c9ee304594  /* 4.09559907378707839  */
+	.short  0x4001
 	ASM_SIZE_DIRECTIVE(f4)
         .align ALIGNARG(4)
         .type f3,@object
-f3:	.tfloat -2.82414939754975962
+f3:	.quad   0xb4bedd1d5fa2f0c6  /* -2.82414939754975962  */
+	.short  0xc000
 	ASM_SIZE_DIRECTIVE(f3)
         .align ALIGNARG(4)
         .type f2,@object
-f2:	.tfloat 1.67595307700780102
+f2:	.quad   0xd685a163b08586e3  /* 1.67595307700780102  */
+	.short  0x3fff
 	ASM_SIZE_DIRECTIVE(f2)
         .align ALIGNARG(4)
         .type f1,@object
-f1:	.tfloat 0.338058687610520237
+f1:	.quad   0xad16073ed4ec3b45  /* 0.338058687610520237  */
+	.short  0x3ffd
 	ASM_SIZE_DIRECTIVE(f1)
 
-#define CBRT2		1.2599210498948731648
-#define ONE_CBRT2	0.793700525984099737355196796584
-#define SQR_CBRT2	1.5874010519681994748
-#define ONE_SQR_CBRT2	0.629960524947436582364439673883
-
 	/* We make the entries in the following table all 16 bytes
 	   wide to avoid having to implement a multiplication by 10.  */
 	.type factor,@object
         .align ALIGNARG(4)
-factor:	.tfloat ONE_SQR_CBRT2
+factor:	.quad 0xa14517cc6b945711 /* 0.629960524947436582364439673883L */
+	.short 0x3ffe
 	.byte 0, 0, 0, 0, 0, 0
-	.tfloat ONE_CBRT2
+	.quad 0xcb2ff529eb71e415 /* 1.5874010519681994748L */
+	.short 0x3ffe
 	.byte 0, 0, 0, 0, 0, 0
-	.tfloat 1.0
+	.quad 0x8000000000000000 /* 1.0L */
+	.short 0x3fff
 	.byte 0, 0, 0, 0, 0, 0
-	.tfloat CBRT2
+	.quad 0xa14517cc6b945711 /* 1.2599210498948731648L */
+	.short 0x3fff
 	.byte 0, 0, 0, 0, 0, 0
-	.tfloat SQR_CBRT2
+	.quad 0xcb2ff529eb71e416 /* 1.5874010519681994748L */
+	.short 0x3fff
 	ASM_SIZE_DIRECTIVE(factor)
 
         .type two64,@object
diff --git a/sysdeps/i386/fpu/s_expm1.S b/sysdeps/i386/fpu/s_expm1.S
index 7199d681ba..038ff72feb 100644
--- a/sysdeps/i386/fpu/s_expm1.S
+++ b/sysdeps/i386/fpu/s_expm1.S
@@ -33,7 +33,8 @@ minus1:	.double -1.0
 one:	.double 1.0
 	ASM_SIZE_DIRECTIVE(one)
 	.type l2e,@object
-l2e:	.tfloat 1.442695040888963407359924681002
+l2e:	.quad   0xb8aa3b295c17f0bc  /* 1.442695040888963407359924681002 */
+	.short  0x3fff
 	ASM_SIZE_DIRECTIVE(l2e)
 
 DEFINE_DBL_MIN
diff --git a/sysdeps/i386/fpu/s_expm1f.S b/sysdeps/i386/fpu/s_expm1f.S
index 04c37bda1b..b0406a45aa 100644
--- a/sysdeps/i386/fpu/s_expm1f.S
+++ b/sysdeps/i386/fpu/s_expm1f.S
@@ -33,7 +33,8 @@ minus1:	.double -1.0
 one:	.double 1.0
 	ASM_SIZE_DIRECTIVE(one)
 	.type l2e,@object
-l2e:	.tfloat 1.442695040888963407359924681002
+l2e:	.quad  0xb8aa3b295c17f0bc  /* 1.442695040888963407359924681002 */
+	.short 0x3fff
 	ASM_SIZE_DIRECTIVE(l2e)
 
 DEFINE_FLT_MIN
diff --git a/sysdeps/i386/fpu/s_log1pl.S b/sysdeps/i386/fpu/s_log1pl.S
index f28349f7d2..202995d3d6 100644
--- a/sysdeps/i386/fpu/s_log1pl.S
+++ b/sysdeps/i386/fpu/s_log1pl.S
@@ -14,7 +14,8 @@ RCSID("$NetBSD: s_log1p.S,v 1.7 1995/05/09 00:10:58 jtc Exp $")
 		-1 + sqrt(2) / 2 <= x <= 1 - sqrt(2) / 2
 	   0.29 is a safe value.
 	*/
-limit:	.tfloat 0.29
+limit:	.quad   0x947ae147ae147ae1 /* 0.29 */
+	.short  0x3ffd
 	/* Please note:	 we use a double value here.  Since 1.0 has
 	   an exact representation this does not effect the accuracy
 	   but it helps to optimize the code.  */
diff --git a/sysdeps/x86_64/fpu/s_log1pl.S b/sysdeps/x86_64/fpu/s_log1pl.S
index 8219f6fbcc..b053579dc5 100644
--- a/sysdeps/x86_64/fpu/s_log1pl.S
+++ b/sysdeps/x86_64/fpu/s_log1pl.S
@@ -14,7 +14,8 @@ RCSID("$NetBSD: s_log1p.S,v 1.7 1995/05/09 00:10:58 jtc Exp $")
 		-1 + sqrt(2) / 2 <= x <= 1 - sqrt(2) / 2
 	   0.29 is a safe value.
 	*/
-limit:	.tfloat 0.29
+limit:	.quad   0x947ae147ae147ae1	/* 0.29L  */
+	.short	0x3ffd
 	/* Please note:	 we use a double value here.  Since 1.0 has
 	   an exact representation this does not effect the accuracy
 	   but it helps to optimize the code.  */
-- 
2.34.1


^ permalink raw reply	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2022-10-03 13:40 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-09-26 16:53 [PATCH] x86: Remove .tfloat usage Adhemerval Zanella
2022-09-26 19:00 ` Noah Goldstein
2022-09-27 19:46   ` H.J. Lu
2022-09-27  8:18 ` Fangrui Song
2022-09-27  8:19   ` Fangrui Song
2022-09-27 19:44     ` H.J. Lu
2022-10-03 13:39   ` Adhemerval Zanella Netto

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