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Thumb2 assembly parsing and encoding for SASX. 

llvm-svn: 139843
This commit is contained in:
Jim Grosbach 2011-09-15 21:01:23 +00:00
parent 74111ee07f
commit 10725a202b
2 changed files with 20 additions and 0 deletions
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2
llvm/lib/Target/ARM/ARMInstrInfo.td
View File

@ -4944,6 +4944,8 @@ def : MnemonicAlias<"srs", "srsia">;
// QSAX == QSUBADDX
def : MnemonicAlias<"qsubaddx", "qsax">;
// SASX == SADDSUBX
def : MnemonicAlias<"saddsubx", "sasx">;
// LDRSBT/LDRHT/LDRSHT post-index offset if optional.
// Note that the write-back output register is a dummy operand for MC (it's

18
llvm/test/MC/ARM/basic-thumb2-instructions.s
View File

@ -1578,6 +1578,24 @@ _func:
@ CHECK: sadd8ne r3, r4, r8 @ encoding: [0x84,0xfa,0x08,0xf3]
@------------------------------------------------------------------------------
@ SASX
@------------------------------------------------------------------------------
saddsubx r9, r2, r7
it ne
saddsubxne r2, r5, r6
sasx r9, r2, r7
it ne
sasxne r2, r5, r6
@ CHECK: sasx r9, r2, r7 @ encoding: [0xa2,0xfa,0x07,0xf9]
@ CHECK: it ne @ encoding: [0x18,0xbf]
@ CHECK: sasxne r2, r5, r6 @ encoding: [0xa5,0xfa,0x06,0xf2]
@ CHECK: sasx r9, r2, r7 @ encoding: [0xa2,0xfa,0x07,0xf9]
@ CHECK: it ne @ encoding: [0x18,0xbf]
@ CHECK: sasxne r2, r5, r6 @ encoding: [0xa5,0xfa,0x06,0xf2]
@------------------------------------------------------------------------------
@ SUB (register)
@------------------------------------------------------------------------------