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| author | Ben Gamari <ben@smart-cactus.org> | 2021-11-08 08:31:24 -0500 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2021-12-02 18:13:30 -0500 |
| commit | 78b78ac463b0b8aad688edcea3c4af447854b929 (patch) | |
| tree | 88cd3cef67c37f50ff83752f1d36a015debfdb38 | |
| parent | 5b950a7f939a35538abf61ea8e86ddd07cc75237 (diff) | |
| download | haskell-78b78ac463b0b8aad688edcea3c4af447854b929.tar.gz | |
ncg/aarch64: Don't sign extend loads
Previously we would emit the sign-extending LDS[HB] instructions for
sub-word loads. However, this is wrong, as noted in #20638.
| -rw-r--r-- | compiler/GHC/CmmToAsm/AArch64/Ppr.hs | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/compiler/GHC/CmmToAsm/AArch64/Ppr.hs b/compiler/GHC/CmmToAsm/AArch64/Ppr.hs index 9c50a46292..9d1dea085a 100644 --- a/compiler/GHC/CmmToAsm/AArch64/Ppr.hs +++ b/compiler/GHC/CmmToAsm/AArch64/Ppr.hs @@ -544,9 +544,9 @@ pprInstr platform instr = case instr of #endif LDR _f o1@(OpReg W8 (RegReal (RealRegSingle i))) o2 | i < 32 -> - text "\tldrsb" <+> pprOp platform o1 <> comma <+> pprOp platform o2 + text "\tldrb" <+> pprOp platform o1 <> comma <+> pprOp platform o2 LDR _f o1@(OpReg W16 (RegReal (RealRegSingle i))) o2 | i < 32 -> - text "\tldrsh" <+> pprOp platform o1 <> comma <+> pprOp platform o2 + text "\tldrh" <+> pprOp platform o1 <> comma <+> pprOp platform o2 LDR _f o1 o2 -> text "\tldr" <+> pprOp platform o1 <> comma <+> pprOp platform o2 STP _f o1 o2 o3 -> text "\tstp" <+> pprOp platform o1 <> comma <+> pprOp platform o2 <> comma <+> pprOp platform o3 |