-- -----------------------------------------------------------------------------
-- Coercing to/from integer/floating-point...
+-- When going to integer, we truncate (round towards 0).
+
-- @coerce(Int2FP|FP2Int)@ are more complicated integer/float
-- conversions. We have to store temporaries in memory to move
-- between the integer and the floating point register sets.
coerceFP2Int from to x = do
(x_op, x_code) <- getOperand x -- ToDo: could be a safe operand
let
- opc = case from of F32 -> CVTSS2SI; F64 -> CVTSD2SI
+ opc = case from of F32 -> CVTTSS2SIQ; F64 -> CVTTSD2SIQ
code dst = x_code `snocOL` opc x_op dst
-- in
return (Any to code) -- works even if the destination rep is <I32
| CVTSS2SD Reg Reg -- F32 to F64
| CVTSD2SS Reg Reg -- F64 to F32
- | CVTSS2SI Operand Reg -- F32 to I32/I64 (with rounding)
- | CVTSD2SI Operand Reg -- F64 to I32/I64 (with rounding)
+ | CVTTSS2SIQ Operand Reg -- F32 to I32/I64 (with truncation)
+ | CVTTSD2SIQ Operand Reg -- F64 to I32/I64 (with truncation)
| CVTSI2SS Operand Reg -- I32/I64 to F32
| CVTSI2SD Operand Reg -- I32/I64 to F64
pprInstr (FDIV size op1 op2) = pprSizeOpOp SLIT("div") size op1 op2
-pprInstr (CVTSS2SD from to) = pprRegReg SLIT("cvtss2sd") from to
-pprInstr (CVTSD2SS from to) = pprRegReg SLIT("cvtsd2ss") from to
-pprInstr (CVTSS2SI from to) = pprOpReg SLIT("cvtss2siq") from to
-pprInstr (CVTSD2SI from to) = pprOpReg SLIT("cvtsd2siq") from to
-pprInstr (CVTSI2SS from to) = pprOpReg SLIT("cvtsi2ssq") from to
-pprInstr (CVTSI2SD from to) = pprOpReg SLIT("cvtsi2sdq") from to
+pprInstr (CVTSS2SD from to) = pprRegReg SLIT("cvtss2sd") from to
+pprInstr (CVTSD2SS from to) = pprRegReg SLIT("cvtsd2ss") from to
+pprInstr (CVTTSS2SIQ from to) = pprOpReg SLIT("cvttss2siq") from to
+pprInstr (CVTTSD2SIQ from to) = pprOpReg SLIT("cvttsd2siq") from to
+pprInstr (CVTSI2SS from to) = pprOpReg SLIT("cvtsi2ssq") from to
+pprInstr (CVTSI2SD from to) = pprOpReg SLIT("cvtsi2sdq") from to
#endif
-- FETCHGOT for PIC on ELF platforms
#if x86_64_TARGET_ARCH
CVTSS2SD src dst -> mkRU [src] [dst]
CVTSD2SS src dst -> mkRU [src] [dst]
- CVTSS2SI src dst -> mkRU (use_R src) [dst]
- CVTSD2SI src dst -> mkRU (use_R src) [dst]
+ CVTTSS2SIQ src dst -> mkRU (use_R src) [dst]
+ CVTTSD2SIQ src dst -> mkRU (use_R src) [dst]
CVTSI2SS src dst -> mkRU (use_R src) [dst]
CVTSI2SD src dst -> mkRU (use_R src) [dst]
FDIV sz src dst -> usageRM src dst
#if x86_64_TARGET_ARCH
CVTSS2SD src dst -> CVTSS2SD (env src) (env dst)
CVTSD2SS src dst -> CVTSD2SS (env src) (env dst)
- CVTSS2SI src dst -> CVTSS2SI (patchOp src) (env dst)
- CVTSD2SI src dst -> CVTSD2SI (patchOp src) (env dst)
+ CVTTSS2SIQ src dst -> CVTTSS2SIQ (patchOp src) (env dst)
+ CVTTSD2SIQ src dst -> CVTTSD2SIQ (patchOp src) (env dst)
CVTSI2SS src dst -> CVTSI2SS (patchOp src) (env dst)
CVTSI2SD src dst -> CVTSI2SD (patchOp src) (env dst)
FDIV sz src dst -> FDIV sz (patchOp src) (patchOp dst)