[Git][ghc/ghc][wip/T23576] Fix MO_SS_Conv W8/16 W64

[Jaro Reinders (@Noughtmare)]

Jaro Reinders pushed to branch wip/T23576 at Glasgow Haskell Compiler / GHC


Commits:
c471ab42 by Jaro Reinders at 2023-07-06T10:46:33+02:00
Fix MO_SS_Conv W8/16 W64

- - - - -


1 changed file:

- compiler/GHC/CmmToAsm/X86/CodeGen.hs


Changes:

=====================================
compiler/GHC/CmmToAsm/X86/CodeGen.hs
=====================================
@@ -624,8 +624,8 @@ iselExpr64 (CmmMachOp (MO_SS_Conv W16 W64) [expr]) = do
      code <- getAnyReg expr
      Reg64 r_dst_hi r_dst_lo <- getNewReg64
      return $ RegCode64 (code r_dst_lo `snocOL`
-                          MOV II16 (OpReg r_dst_lo) (OpReg eax) `snocOL`
-                          CLTD II16 `snocOL`
+                          MOVZxL II32 (OpReg r_dst_lo) (OpReg eax) `snocOL`
+                          CLTD II32 `snocOL`
                           MOV II32 (OpReg eax) (OpReg r_dst_lo) `snocOL`
                           MOV II32 (OpReg edx) (OpReg r_dst_hi))
                           r_dst_hi
@@ -635,8 +635,8 @@ iselExpr64 (CmmMachOp (MO_SS_Conv W8 W64) [expr]) = do
      code <- getAnyReg expr
      Reg64 r_dst_hi r_dst_lo <- getNewReg64
      return $ RegCode64 (code r_dst_lo `snocOL`
-                          MOV II8 (OpReg r_dst_lo) (OpReg eax) `snocOL`
-                          CLTD II8 `snocOL`
+                          MOVZxL II32 (OpReg r_dst_lo) (OpReg eax) `snocOL`
+                          CLTD II32 `snocOL`
                           MOV II32 (OpReg eax) (OpReg r_dst_lo) `snocOL`
                           MOV II32 (OpReg edx) (OpReg r_dst_hi))
                           r_dst_hi



View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/c471ab42c6fa16ee4ddfde393c5732a57382a25a

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/c471ab42c6fa16ee4ddfde393c5732a57382a25a
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