Revert "Generalized assignment rewriting pass."

This reverts commit 2ec79623.

Revert "Generalized assignment rewriting pass."
This reverts commit 2ec79623.
6251f729 · Edward Z. Yang · 2ec79623 · 6251f729 · 6251f729
Commit 6251f729 authored Apr 15, 2011 by Edward Z. Yang
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Showing with 103 additions and 398 deletions

compiler/cmm/CmmCPS.hs compiler/cmm/CmmCPS.hs +3 -2

compiler/cmm/CmmSpillReload.hs compiler/cmm/CmmSpillReload.hs +100 -396

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--- a/compiler/cmm/CmmCPS.hs
+++ b/compiler/cmm/CmmCPS.hs
@@ -95,8 +95,9 @@ cpsTop hsc_env (CmmProc h@(TopInfo {stack_info=StackInfo {arg_space=entry_off}})
                             (dualLivenessWithInsertion procPoints) g
                    -- Insert spills at defns; reloads at return points
       g     <-
-                runOptimization $ rewriteAssignments g
-       dump Opt_D_dump_cmmz "Post rewrite assignments" g
+              -- pprTrace "pre insertLateReloads" (ppr g) $
+                runOptimization $ insertLateReloads g -- Duplicate reloads just before uses
+       dump Opt_D_dump_cmmz "Post late reloads" g
       g     <-
               -- pprTrace "post insertLateReloads" (ppr g) $
                dual_rewrite runOptimization Opt_D_dump_cmmz "Dead Assignment Elimination"

--- a/compiler/cmm/CmmSpillReload.hs
+++ b/compiler/cmm/CmmSpillReload.hs