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| author | Manman Ren <mren@apple.com> | 2012-07-09 18:57:12 +0000 |
|---|---|---|
| committer | Manman Ren <mren@apple.com> | 2012-07-09 18:57:12 +0000 |
| commit | 6209364834a4c0ca720d3fcc9ef7fa4c1fb39ecc (patch) | |
| tree | dbc2b4ad71d75e1867db2dd6e787306f25468e1a /test/CodeGen/X86 | |
| parent | 241b77fa451f8076e47c37212028454ad52ece15 (diff) | |
| download | external_llvm-6209364834a4c0ca720d3fcc9ef7fa4c1fb39ecc.zip external_llvm-6209364834a4c0ca720d3fcc9ef7fa4c1fb39ecc.tar.gz external_llvm-6209364834a4c0ca720d3fcc9ef7fa4c1fb39ecc.tar.bz2 | |
X86: implement functions to analyze & synthesize CMOV|SET|Jcc
getCondFromSETOpc, getCondFromCMovOpc, getSETFromCond, getCMovFromCond
No functional change intended.
If we want to update the condition code of CMOV|SET|Jcc, we first analyze the
opcode to get the condition code, then update the condition code, finally
synthesize the new opcode form the new condition code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159955 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86')
| -rw-r--r-- | test/CodeGen/X86/jump_sign.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/CodeGen/X86/jump_sign.ll b/test/CodeGen/X86/jump_sign.ll index e84f49c..b868218 100644 --- a/test/CodeGen/X86/jump_sign.ll +++ b/test/CodeGen/X86/jump_sign.ll @@ -120,6 +120,23 @@ if.then: if.else: ret i32 %sub } +define i32 @l3(i32 %a, i32 %b) nounwind { +entry: +; CHECK: l3: +; CHECK: sub +; CHECK-NOT: cmp +; CHECK: jge + %cmp = icmp sgt i32 %b, %a + %sub = sub nsw i32 %a, %b + br i1 %cmp, label %if.then, label %if.else + +if.then: + ret i32 %sub + +if.else: + %add = add nsw i32 %sub, 1 + ret i32 %add +} ; rdar://11540023 define i32 @n(i32 %x, i32 %y) nounwind { entry: |