diff options
Diffstat (limited to 'compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs')
| -rw-r--r-- | compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs b/compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs index ec77d91185..a5016abc6f 100644 --- a/compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs +++ b/compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs @@ -5,6 +5,7 @@ -- Handling of join points -- ~~~~~~~~~~~~~~~~~~~~~~~ -- +-- @ -- B1: B2: -- ... ... -- RELOAD SLOT(0), %r1 RELOAD SLOT(0), %r1 @@ -14,9 +15,11 @@ -- B3: ... C ... -- RELOAD SLOT(0), %r1 -- ... +-- @ -- -- The Plan -- ~~~~~~~~ +-- -- As long as %r1 hasn't been written to in A, B or C then we don't need -- the reload in B3. -- |