diff options
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2013-02-05 17:53:52 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2013-02-05 17:53:52 +0000 |
| commit | a499d2bcef0c1001c60d752d356e50eed2402ca8 (patch) | |
| tree | 3a2648c3432c807a11fb4069696aad92d5ae3277 /lib/Target/R600/R600Instructions.td | |
| parent | 0a9d1d31e9b3239b1dc38a67d31810c4bb405d0a (diff) | |
Don't use MRI liveouts in R600.
Something very strange is going on with the output registers in this
target. Its ISelLowering code is inserting dangling CopyToReg nodes,
hoping that those physregs won't get clobbered before the RETURN.
This patch adds the output registers as implicit uses on RETURN
instructions in the custom emission pass. I'd much prefer to have those
CopyToReg nodes glued to the RETURNs, but I don't see how.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174400 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/R600/R600Instructions.td')
| -rw-r--r-- | lib/Target/R600/R600Instructions.td | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Target/R600/R600Instructions.td b/lib/Target/R600/R600Instructions.td index bcbb5a107b..f935313fe9 100644 --- a/lib/Target/R600/R600Instructions.td +++ b/lib/Target/R600/R600Instructions.td @@ -1580,7 +1580,8 @@ def FNEG_R600 : FNEG<R600_Reg32>; //===---------------------------------------------------------------------===// // Return instruction //===---------------------------------------------------------------------===// -let isTerminator = 1, isReturn = 1, isBarrier = 1, hasCtrlDep = 1 in { +let isTerminator = 1, isReturn = 1, isBarrier = 1, hasCtrlDep = 1, + usesCustomInserter = 1 in { def RETURN : ILFormat<(outs), (ins variable_ops), "RETURN", [(IL_retflag)]>; } |