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Diffstat (limited to 'src/cmd/9c/machcap.c')
| -rw-r--r-- | src/cmd/9c/machcap.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/src/cmd/9c/machcap.c b/src/cmd/9c/machcap.c new file mode 100644 index 000000000..af44bc820 --- /dev/null +++ b/src/cmd/9c/machcap.c @@ -0,0 +1,105 @@ +// cmd/9c/machcap.c from Vita Nuova. +// +// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. +// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) +// Portions Copyright © 1997-1999 Vita Nuova Limited +// Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com) +// Portions Copyright © 2004,2006 Bruce Ellis +// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) +// Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others +// Portions Copyright © 2009 The Go Authors. All rights reserved. +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to deal +// in the Software without restriction, including without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +// THE SOFTWARE. + +#include "gc.h" + +int +machcap(Node *n) +{ + + if(n == Z) + return 1; /* test */ + + switch(n->op) { + case OMUL: + case OLMUL: + case OASMUL: + case OASLMUL: + if(typechlv[n->type->etype]) + return 1; + break; + + case OADD: + case OAND: + case OOR: + case OSUB: + case OXOR: + case OASHL: + case OLSHR: + case OASHR: + if(typechlv[n->left->type->etype]) + return 1; + break; + + case OCAST: + return 1; + + case OCOND: + case OCOMMA: + case OLIST: + case OANDAND: + case OOROR: + case ONOT: + return 1; + + case OASADD: + case OASSUB: + case OASAND: + case OASOR: + case OASXOR: + return 1; + + case OASASHL: + case OASASHR: + case OASLSHR: + return 1; + + case OPOSTINC: + case OPOSTDEC: + case OPREINC: + case OPREDEC: + return 1; + + case OEQ: + case ONE: + case OLE: + case OGT: + case OLT: + case OGE: + case OHI: + case OHS: + case OLO: + case OLS: + return 1; + case ONEG: + case OCOM: + break; + } + return 0; +} |