Mercurial > hg > truffle
changeset 1915:885e464e1a40
6996240: The BitSet.length method sometimes returns an index+1 value less than that of the highest bit set.
Reviewed-by: never, kvn
author | twisti |
---|---|
date | Tue, 02 Nov 2010 14:56:40 -0700 |
parents | ae065c367d93 |
children | e62345fd6a46 |
files | src/cpu/sparc/vm/sparc.ad |
diffstat | 1 files changed, 19 insertions(+), 19 deletions(-) [+] |
line wrap: on
line diff
--- a/src/cpu/sparc/vm/sparc.ad Tue Nov 02 09:00:37 2010 -0700 +++ b/src/cpu/sparc/vm/sparc.ad Tue Nov 02 14:56:40 2010 -0700 @@ -9516,16 +9516,16 @@ Register Rdst = $dst$$Register; Register Rsrc = $src$$Register; Register Rtmp = $tmp$$Register; - __ srl(Rsrc, 1, Rtmp); - __ srl(Rsrc, 0, Rdst); + __ srl(Rsrc, 1, Rtmp); + __ srl(Rsrc, 0, Rdst); __ or3(Rdst, Rtmp, Rdst); - __ srl(Rdst, 2, Rtmp); + __ srl(Rdst, 2, Rtmp); __ or3(Rdst, Rtmp, Rdst); - __ srl(Rdst, 4, Rtmp); + __ srl(Rdst, 4, Rtmp); __ or3(Rdst, Rtmp, Rdst); - __ srl(Rdst, 8, Rtmp); + __ srl(Rdst, 8, Rtmp); __ or3(Rdst, Rtmp, Rdst); - __ srl(Rdst, 16, Rtmp); + __ srl(Rdst, 16, Rtmp); __ or3(Rdst, Rtmp, Rdst); __ popc(Rdst, Rdst); __ mov(BitsPerInt, Rtmp); @@ -9534,7 +9534,7 @@ ins_pipe(ialu_reg); %} -instruct countLeadingZerosL(iRegI dst, iRegL src, iRegL tmp, flagsReg cr) %{ +instruct countLeadingZerosL(iRegIsafe dst, iRegL src, iRegL tmp, flagsReg cr) %{ predicate(UsePopCountInstruction); // See Matcher::match_rule_supported match(Set dst (CountLeadingZerosL src)); effect(TEMP dst, TEMP tmp, KILL cr); @@ -9565,18 +9565,18 @@ Register Rdst = $dst$$Register; Register Rsrc = $src$$Register; Register Rtmp = $tmp$$Register; - __ srlx(Rsrc, 1, Rtmp); - __ or3(Rsrc, Rtmp, Rdst); - __ srlx(Rdst, 2, Rtmp); - __ or3(Rdst, Rtmp, Rdst); - __ srlx(Rdst, 4, Rtmp); - __ or3(Rdst, Rtmp, Rdst); - __ srlx(Rdst, 8, Rtmp); - __ or3(Rdst, Rtmp, Rdst); - __ srlx(Rdst, 16, Rtmp); - __ or3(Rdst, Rtmp, Rdst); - __ srlx(Rdst, 32, Rtmp); - __ or3(Rdst, Rtmp, Rdst); + __ srlx(Rsrc, 1, Rtmp); + __ or3( Rsrc, Rtmp, Rdst); + __ srlx(Rdst, 2, Rtmp); + __ or3( Rdst, Rtmp, Rdst); + __ srlx(Rdst, 4, Rtmp); + __ or3( Rdst, Rtmp, Rdst); + __ srlx(Rdst, 8, Rtmp); + __ or3( Rdst, Rtmp, Rdst); + __ srlx(Rdst, 16, Rtmp); + __ or3( Rdst, Rtmp, Rdst); + __ srlx(Rdst, 32, Rtmp); + __ or3( Rdst, Rtmp, Rdst); __ popc(Rdst, Rdst); __ mov(BitsPerLong, Rtmp); __ sub(Rtmp, Rdst, Rdst);