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ARM: Add support for the Thumb2 PLI alternate literal form.

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This adds an instruction alias to make the assembler recognize the alternate literal form: pli [PC, #+/-<imm>]

See A8.8.129 in the ARM ARM (DDI 0406C.b).

Fixes <rdar://problem/14403733>.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186459 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tilmann Scheller 2013-07-16 21:52:34 +00:00
parent 61cf158075
commit 898788c6bc
2 changed files with 7 additions and 0 deletions
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3
lib/Target/ARM/ARMInstrThumb2.td
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@ -4427,3 +4427,6 @@ def : t2InstAlias<"ldrsh${p}.w $Rt, $addr",
def : t2InstAlias<"add${p} $Rd, pc, $imm",
(t2ADR rGPR:$Rd, imm0_4095:$imm, pred:$p)>;
// PLI with alternate literal form.
def : t2InstAlias<"pli${p} $addr", (t2PLIpci t2ldr_pcrel_imm12:$addr, pred:$p)>;

4
test/MC/ARM/basic-thumb2-instructions.s
View File

@ -1599,12 +1599,16 @@ _func:
pli [r6, #33]
pli [r6, #257]
pli [r7, #257]
pli [pc, #+4095]
pli [pc, #-4095]
@ CHECK: pli [r5, #-4] @ encoding: [0x15,0xf9,0x04,0xfc]
@ CHECK: pli [r6, #32] @ encoding: [0x96,0xf9,0x20,0xf0]
@ CHECK: pli [r6, #33] @ encoding: [0x96,0xf9,0x21,0xf0]
@ CHECK: pli [r6, #257] @ encoding: [0x96,0xf9,0x01,0xf1]
@ CHECK: pli [r7, #257] @ encoding: [0x97,0xf9,0x01,0xf1]
@ CHECK: pli [pc, #4095] @ encoding: [0x9f,0xf9,0xff,0xff]
@ CHECK: pli [pc, #-4095] @ encoding: [0x1f,0xf9,0xff,0xff]
@------------------------------------------------------------------------------