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| author | Evan Cheng <evan.cheng@apple.com> | 2006-05-31 22:05:11 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2006-05-31 22:05:11 +0000 |
| commit | f91c10153cbf7d7e61d0bc5601caaa6db00a449f (patch) | |
| tree | 1c60d044f015629d088189a337c347a6c6f191e6 /lib/Target | |
| parent | 6dc6665e299d1d37da6fab0551f27667c1ad6c73 (diff) | |
| download | llvm-f91c10153cbf7d7e61d0bc5601caaa6db00a449f.tar.gz llvm-f91c10153cbf7d7e61d0bc5601caaa6db00a449f.tar.bz2 llvm-f91c10153cbf7d7e61d0bc5601caaa6db00a449f.tar.xz | |
Sign extender
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28603 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.td | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td index d222bead62..cd023cc74f 100644 --- a/lib/Target/X86/X86InstrInfo.td +++ b/lib/Target/X86/X86InstrInfo.td @@ -706,14 +706,6 @@ def IDIV16m: I<0xF7, MRM7m, (ops i16mem:$src), // DX:AX/[mem16] = AX,DX def IDIV32m: I<0xF7, MRM7m, (ops i32mem:$src), // EDX:EAX/[mem32] = EAX,EDX "idiv{l} $src", []>, Imp<[EAX,EDX],[EAX,EDX]>; -// Sign-extenders for division. -def CBW : I<0x98, RawFrm, (ops), - "{cbtw|cbw}", []>, Imp<[AL],[AH]>; // AX = signext(AL) -def CWD : I<0x99, RawFrm, (ops), - "{cwtd|cwd}", []>, Imp<[AX],[DX]>; // DX:AX = signext(AX) -def CDQ : I<0x99, RawFrm, (ops), - "{cltd|cdq}", []>, Imp<[EAX],[EDX]>; // EDX:EAX = signext(EAX) - //===----------------------------------------------------------------------===// // Two address Instructions... @@ -2285,6 +2277,16 @@ def MOVZX32rm16: I<0xB7, MRMSrcMem, (ops GR32:$dst, i16mem:$src), "movz{wl|x} {$src, $dst|$dst, $src}", [(set GR32:$dst, (zextloadi32i16 addr:$src))]>, TB; +def CBW : I<0x98, RawFrm, (ops), + "{cbtw|cbw}", []>, Imp<[AL],[AX]>; // AX = signext(AL) +def CWDE : I<0x98, RawFrm, (ops), + "{cwtl|cwde}", []>, Imp<[AX],[EAX]>; // EAX = signext(AX) + +def CWD : I<0x99, RawFrm, (ops), + "{cwtd|cwd}", []>, Imp<[AX],[AX,DX]>; // DX:AX = signext(AX) +def CDQ : I<0x99, RawFrm, (ops), + "{cltd|cdq}", []>, Imp<[EAX],[EAX,EDX]>; // EDX:EAX = signext(EAX) + //===----------------------------------------------------------------------===// // Miscellaneous Instructions //===----------------------------------------------------------------------===// |