diff options
| author | Fan Hongjian <fan.howard@gmail.com> | 2011-06-09 17:19:08 -0400 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2011-06-09 17:19:08 -0400 |
| commit | fc41e621e875838bb62a111ac8ad97fa39f2bb2b (patch) | |
| tree | 6749f57b3aa15b868e58a177835c00f4d15cb597 /src/cmd | |
| parent | 965ff4bb3a01a87b70d061ad0eb2766352e7d598 (diff) | |
| download | go-fc41e621e875838bb62a111ac8ad97fa39f2bb2b.tar.xz | |
math: add sqrt_arm.s and sqrtGoC.go as fallback to soft fp emulation
5a: add SQRTF and SQRTD
5l: add ASQRTF and ASQRTD
Use ARMv7 VFP VSQRT instruction to speed up math.Sqrt
R=rsc, dave, m
CC=golang-dev
https://golang.org/cl/4551082
Diffstat (limited to 'src/cmd')
| -rw-r--r-- | src/cmd/5a/lex.c | 2 | ||||
| -rw-r--r-- | src/cmd/5l/5.out.h | 2 | ||||
| -rw-r--r-- | src/cmd/5l/asm.c | 4 | ||||
| -rw-r--r-- | src/cmd/5l/obj.c | 1 | ||||
| -rw-r--r-- | src/cmd/5l/softfloat.c | 2 | ||||
| -rw-r--r-- | src/cmd/5l/span.c | 2 |
6 files changed, 12 insertions, 1 deletions
diff --git a/src/cmd/5a/lex.c b/src/cmd/5a/lex.c index a04cda2201..3978f1a6c1 100644 --- a/src/cmd/5a/lex.c +++ b/src/cmd/5a/lex.c @@ -338,6 +338,8 @@ struct "NRMD", LTYPEI, ANRMD, */ + "SQRTF", LTYPEI, ASQRTF, + "SQRTD", LTYPEI, ASQRTD, "CMPF", LTYPEL, ACMPF, "CMPD", LTYPEL, ACMPD, "ADDF", LTYPEK, AADDF, diff --git a/src/cmd/5l/5.out.h b/src/cmd/5l/5.out.h index 002b46d451..bdc2c956f8 100644 --- a/src/cmd/5l/5.out.h +++ b/src/cmd/5l/5.out.h @@ -126,6 +126,8 @@ enum as AMULD, ADIVF, ADIVD, + ASQRTF, + ASQRTD, ASRL, ASRA, diff --git a/src/cmd/5l/asm.c b/src/cmd/5l/asm.c index 011e7f8424..8dfcd94610 100644 --- a/src/cmd/5l/asm.c +++ b/src/cmd/5l/asm.c @@ -1186,7 +1186,7 @@ if(debug['G']) print("%ux: %s: arm %d %d %d\n", (uint32)(p->pc), p->from.sym->na r = p->reg; if(r == NREG) { r = rt; - if(p->as == AMOVF || p->as == AMOVD) + if(p->as == AMOVF || p->as == AMOVD || p->as == ASQRTF || p->as == ASQRTD) r = 0; } o1 |= rf | (r<<16) | (rt<<12); @@ -1620,6 +1620,8 @@ oprrr(int a, int sc) case AMULF: return o | (0xe<<24) | (0x2<<20) | (0xa<<8) | (0<<4); case ADIVD: return o | (0xe<<24) | (0x8<<20) | (0xb<<8) | (0<<4); case ADIVF: return o | (0xe<<24) | (0x8<<20) | (0xa<<8) | (0<<4); + case ASQRTD: return o | (0xe<<24) | (0xb<<20) | (1<<16) | (0xb<<8) | (0xc<<4); + case ASQRTF: return o | (0xe<<24) | (0xb<<20) | (1<<16) | (0xa<<8) | (0xc<<4); case ACMPD: return o | (0xe<<24) | (0xb<<20) | (4<<16) | (0xb<<8) | (0xc<<4); case ACMPF: return o | (0xe<<24) | (0xb<<20) | (4<<16) | (0xa<<8) | (0xc<<4); diff --git a/src/cmd/5l/obj.c b/src/cmd/5l/obj.c index 96ba0010fa..2089e8f0bd 100644 --- a/src/cmd/5l/obj.c +++ b/src/cmd/5l/obj.c @@ -67,6 +67,7 @@ static char* linkername[] = { "runtime.softfloat", + "math.sqrtGoC", }; void diff --git a/src/cmd/5l/softfloat.c b/src/cmd/5l/softfloat.c index 03d8c6d262..4f799d17ee 100644 --- a/src/cmd/5l/softfloat.c +++ b/src/cmd/5l/softfloat.c @@ -54,6 +54,8 @@ softfloat(void) case AMULD: case ADIVF: case ADIVD: + case ASQRTF: + case ASQRTD: goto soft; default: diff --git a/src/cmd/5l/span.c b/src/cmd/5l/span.c index 4067f1a327..0fe3105976 100644 --- a/src/cmd/5l/span.c +++ b/src/cmd/5l/span.c @@ -1023,6 +1023,8 @@ buildop(void) oprange[AMULD] = oprange[r]; oprange[ADIVF] = oprange[r]; oprange[ADIVD] = oprange[r]; + oprange[ASQRTF] = oprange[r]; + oprange[ASQRTD] = oprange[r]; oprange[AMOVFD] = oprange[r]; oprange[AMOVDF] = oprange[r]; break; |