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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34072 91177308-0d34-0410-b5e6-96231b3b80d8
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Evan Cheng 2007-02-08 23:53:38 +00:00
parent 1cbd333618
commit 6a9a76508c
1 changed files with 0 additions and 14 deletions
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14
lib/Target/X86/README.txt
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@ -665,20 +665,6 @@ The add\sub pair is really unneeded here.
//===---------------------------------------------------------------------===//
We generate really bad code in some cases due to lowering SETCC/SELECT at
legalize time, which prevents the post-legalize dag combine pass from
understanding the code. As a silly example, this prevents us from folding
stuff like this:
bool %test(ulong %x) {
%tmp = setlt ulong %x, 4294967296
ret bool %tmp
}
into x.h == 0
//===---------------------------------------------------------------------===//
We currently compile sign_extend_inreg into two shifts:
long foo(long X) {