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Second stab at target-dependent lowering of everyone's favorite nodes: [SU]ADDO

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- LowerXADDO lowers [SU]ADDO into an ADD with an implicit EFLAGS define. The
  EFLAGS are fed into a SETCC node which has the conditional COND_O or COND_C,
  depending on the type of ADDO requested.

- LowerBRCOND now recognizes if it's coming from a SETCC node with COND_O or
  COND_C set.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60388 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
2008-12-02 01:06:39 +00:00
parent 9f24874f2e
commit 61edeb5ed2
3 changed files with 34 additions and 26 deletions
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test/CodeGen/X86/add-with-overflow.ll
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@ -1,6 +1,5 @@
; RUN: llvm-as < %s | llc -march=x86 | grep {jo} | count 1
; RUN: llvm-as < %s | llc -march=x86 | grep {jc} | count 1
; XFAIL: *
@ok = internal constant [4 x i8] c"%d\0A\00"
@no = internal constant [4 x i8] c"no\0A\00"