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Thumb2 assembly parsing and encoding for SXTAB/SXTAB16/SXTAH. 

llvm-svn: 140029
This commit is contained in:
Jim Grosbach 2011-09-19 17:56:37 +00:00
parent 43a772eda1
commit 264abdecf0
2 changed files with 61 additions and 0 deletions
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8
llvm/lib/Target/ARM/ARMInstrThumb2.td
View File

@ -3922,3 +3922,11 @@ def : t2InstAlias<"strb${p} $Rt, $addr",
(t2STRBs rGPR:$Rt, t2addrmode_so_reg:$addr, pred:$p)>;
def : t2InstAlias<"strh${p} $Rt, $addr",
(t2STRHs rGPR:$Rt, t2addrmode_so_reg:$addr, pred:$p)>;
// Extend instruction optional rotate operand.
def : t2InstAlias<"sxtab${p} $Rd, $Rn, $Rm",
(t2SXTAB rGPR:$Rd, rGPR:$Rn, rGPR:$Rm, 0, pred:$p)>;
def : t2InstAlias<"sxtah${p} $Rd, $Rn, $Rm",
(t2SXTAH rGPR:$Rd, rGPR:$Rn, rGPR:$Rm, 0, pred:$p)>;
def : t2InstAlias<"sxtab16${p} $Rd, $Rn, $Rm",
(t2SXTAB16 rGPR:$Rd, rGPR:$Rn, rGPR:$Rm, 0, pred:$p)>;

53
llvm/test/MC/ARM/basic-thumb2-instructions.s
View File

@ -2451,3 +2451,56 @@ _func:
@ CHECK: svceq #255 @ encoding: [0xff,0xdf]
@ CHECK: svcne #33 @ encoding: [0x21,0xdf]
@------------------------------------------------------------------------------
@ SXTAB
@------------------------------------------------------------------------------
sxtab r2, r3, r4
sxtab r4, r5, r6, ror #0
it lt
sxtablt r6, r2, r9, ror #8
sxtab r5, r1, r4, ror #16
sxtab r7, r8, r3, ror #24
@ CHECK: sxtab r2, r3, r4 @ encoding: [0x43,0xfa,0x84,0xf2]
@ CHECK: sxtab r4, r5, r6 @ encoding: [0x45,0xfa,0x86,0xf4]
@ CHECK: it lt @ encoding: [0xb8,0xbf]
@ CHECK: sxtablt r6, r2, r9, ror #8 @ encoding: [0x42,0xfa,0x99,0xf6]
@ CHECK: sxtab r5, r1, r4, ror #16 @ encoding: [0x41,0xfa,0xa4,0xf5]
@ CHECK: sxtab r7, r8, r3, ror #24 @ encoding: [0x48,0xfa,0xb3,0xf7]
@------------------------------------------------------------------------------
@ SXTAB16
@------------------------------------------------------------------------------
sxtab16 r6, r2, r7, ror #0
sxtab16 r3, r5, r8, ror #8
sxtab16 r3, r2, r1, ror #16
ite ne
sxtab16ne r0, r1, r4
sxtab16eq r1, r2, r3, ror #24
@ CHECK: sxtab16 r6, r2, r7 @ encoding: [0x22,0xfa,0x87,0xf6]
@ CHECK: sxtab16 r3, r5, r8, ror #8 @ encoding: [0x25,0xfa,0x98,0xf3]
@ CHECK: sxtab16 r3, r2, r1, ror #16 @ encoding: [0x22,0xfa,0xa1,0xf3]
@ CHECK: ite ne @ encoding: [0x14,0xbf]
@ CHECK: sxtab16ne r0, r1, r4 @ encoding: [0x21,0xfa,0x84,0xf0]
@ CHECK: sxtab16eq r1, r2, r3, ror #24 @ encoding: [0x22,0xfa,0xb3,0xf1]
@------------------------------------------------------------------------------
@ SXTAH
@------------------------------------------------------------------------------
sxtah r1, r3, r9
sxtah r3, r8, r3, ror #8
sxtah r9, r3, r3, ror #24
ite hi
sxtahhi r6, r1, r6, ror #0
sxtahls r2, r2, r4, ror #16
@ CHECK: sxtah r1, r3, r9 @ encoding: [0x03,0xfa,0x89,0xf1]
@ CHECK: sxtah r3, r8, r3, ror #8 @ encoding: [0x08,0xfa,0x93,0xf3]
@ CHECK: sxtah r9, r3, r3, ror #24 @ encoding: [0x03,0xfa,0xb3,0xf9]
@ CHECK: ite hi @ encoding: [0x8c,0xbf]
@ CHECK: sxtahhi r6, r1, r6 @ encoding: [0x01,0xfa,0x86,0xf6]
@ CHECK: sxtahls r2, r2, r4, ror #16 @ encoding: [0x02,0xfa,0xa4,0xf2]