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Fix Ordered/Unordered FP stuff
-
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-improve bytezap opertunities
-ulong %foo(ulong %y) {
-entry:
- %tmp = and ulong %y, 65535
- %tmp2 = shr ulong %tmp, ubyte 3
- ret ulong %tmp2
-}
-
-
-compiles to a 3 instruction sequence without instcombine
- zapnot $16,3,$0
- srl $0,3,$0
- ret $31,($26),1
-
-After instcombine you get
-ulong %foo(ulong %y) {
-entry:
- %tmp = shr ulong %y, ubyte 3 ; <ulong> [#uses=1]
- %tmp2 = and ulong %tmp, 8191 ; <ulong> [#uses=1]
- ret ulong %tmp2
-}
-
-which compiles to
- lda $0,8191($31)
- srl $16,3,$1
- and $1,$0,$0
- ret $31,($26),1
-