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| author | Ben Gamari <bgamari.foss@gmail.com> | 2018-03-19 12:02:29 -0400 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2018-03-19 12:05:12 -0400 |
| commit | d27336edcf2667c3c3908694247861beec3fc29b (patch) | |
| tree | 9024db7e8499ff1b74ba04402543d52de9ee66e3 | |
| parent | 5241f2987b3b0e791bfbe7b31529f5fbc600bdc7 (diff) | |
| download | haskell-d27336edcf2667c3c3908694247861beec3fc29b.tar.gz | |
[RFC] nativeGen: Add support for MO_SS_Conv_W32_W64 on i386
This is required by D4288. However, this only handles i386; we will
likely also need to do the same for PPC and SPARC, lest they break when
D4288 is re-merged.
Test Plan: Validate
Reviewers: simonmar
Reviewed By: simonmar
Subscribers: rwbarton, thomie, carter
Differential Revision: https://phabricator.haskell.org/D4362
| -rw-r--r-- | compiler/nativeGen/X86/CodeGen.hs | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/compiler/nativeGen/X86/CodeGen.hs b/compiler/nativeGen/X86/CodeGen.hs index 09757e769e..a0b0673d27 100644 --- a/compiler/nativeGen/X86/CodeGen.hs +++ b/compiler/nativeGen/X86/CodeGen.hs @@ -468,6 +468,20 @@ iselExpr64 (CmmMachOp (MO_UU_Conv _ W64) [expr]) = do r_dst_lo ) +iselExpr64 (CmmMachOp (MO_SS_Conv W32 W64) [expr]) = do + fn <- getAnyReg expr + r_dst_lo <- getNewRegNat II32 + let r_dst_hi = getHiVRegFromLo r_dst_lo + code = fn r_dst_lo + return ( + ChildCode64 (code `snocOL` + MOV 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_lo + ) + iselExpr64 expr = pprPanic "iselExpr64(i386)" (ppr expr) |