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| author | Peter Trommler <ptrommler@acm.org> | 2021-07-18 17:28:48 +0200 |
|---|---|---|
| committer | Ben Gamari <ben@well-typed.com> | 2021-07-28 15:51:13 +0000 |
| commit | 1b89584ce66195da74f97652f8f4d6fd4ab286ff (patch) | |
| tree | fa1be41e80ff71d7429f80b4575dac07229d17ff | |
| parent | 10678945c1d3261273a1d7a389d14a69f4e28567 (diff) | |
| download | haskell-wip/T20130.tar.gz | |
Delete ToDo about incorrect optimisation [skip ci]wip/T20130
On big-endian systems a narrow after a load cannot be replaced with
a narrow load.
| -rw-r--r-- | compiler/GHC/Cmm/Opt.hs | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/compiler/GHC/Cmm/Opt.hs b/compiler/GHC/Cmm/Opt.hs index 8035d7b2bd..676c1270b5 100644 --- a/compiler/GHC/Cmm/Opt.hs +++ b/compiler/GHC/Cmm/Opt.hs @@ -108,10 +108,6 @@ cmmMachOpFoldM platform conv_outer [CmmMachOp conv_inner [x]] intconv True = MO_SS_Conv intconv False = MO_UU_Conv --- ToDo: a narrow of a load can be collapsed into a narrow load, right? --- but what if the architecture only supports word-sized loads, should --- we do the transformation anyway? - cmmMachOpFoldM platform mop [CmmLit (CmmInt x xrep), CmmLit (CmmInt y _)] = case mop of -- for comparisons: don't forget to narrow the arguments before |