replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[AArch64][AsmParser] Add support for parsing shift/extend operands with symbols. 

Differential Revision: https://reviews.llvm.org/D27953

llvm-svn: 290609
This commit is contained in:
Chad Rosier 2016-12-27 16:58:09 +00:00
parent a01cce8887
commit 2ff37b8615
2 changed files with 47 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
View File

@ -2406,17 +2406,19 @@ AArch64AsmParser::tryParseOptionalShiftExtend(OperandVector &Operands) {
return MatchOperand_ParseFail;
}
// "extend" type operatoins don't need an immediate, #0 is implicit.
// "extend" type operations don't need an immediate, #0 is implicit.
SMLoc E = SMLoc::getFromPointer(getLoc().getPointer() - 1);
Operands.push_back(
AArch64Operand::CreateShiftExtend(ShOp, 0, false, S, E, getContext()));
return MatchOperand_Success;
}
// Make sure we do actually have a number or a parenthesized expression.
// Make sure we do actually have a number, identifier or a parenthesized
// expression.
SMLoc E = Parser.getTok().getLoc();
if (!Parser.getTok().is(AsmToken::Integer) &&
!Parser.getTok().is(AsmToken::LParen)) {
!Parser.getTok().is(AsmToken::LParen) &&
!Parser.getTok().is(AsmToken::Identifier)) {
Error(E, "expected integer shift amount");
return MatchOperand_ParseFail;
}

42
llvm/test/MC/AArch64/shift_extend_op_w_symbol.s Normal file
View File

@ -0,0 +1,42 @@
// RUN: not llvm-mc -triple aarch64-none-linux-gnu < %s 1> %t1 2> %t2
// RUN: FileCheck < %t1 %s
// RUN: FileCheck --check-prefix=CHECK-ERROR < %t2 %s
.globl _func
_func:
// CHECK-LABEL: _func
.set IMM2, 2
.equ IMM4, 4
// Make sure we can use a symbol with the optionally shift left operand.
add w1, w2, w3, uxtb #IMM2
add w4, w5, w6, uxth #IMM4
add x7, x8, x9, lsl #IMM2
add w7, w8, w9, uxtw #IMM4
add x1, x2, x3, uxtx #IMM4
// CHECK: add w1, w2, w3, uxtb #2
// CHECK: add w4, w5, w6, uxth #4
// CHECK: add x7, x8, x9, lsl #2
// CHECK: add w7, w8, w9, uxtw #4
// CHECK: add x1, x2, x3, uxtx #4
add w1, w2, w3, sxtb #IMM2
add w4, w5, w6, sxth #IMM4
add x7, x8, x9, lsl #IMM2
add w7, w8, w9, sxtw #IMM2
add x1, x2, x3, sxtx #IMM4
// CHECK: add w1, w2, w3, sxtb #2
// CHECK: add w4, w5, w6, sxth #4
// CHECK: add x7, x8, x9, lsl #2
// CHECK: add w7, w8, w9, sxtw #2
// CHECK: add x1, x2, x3, sxtx #4
add w1, w2, w3, lsl #IMM3
// CHECK-ERROR: error: expected constant '#imm' after shift specifier
// CHECK-ERROR: add w1, w2, w3, lsl #IMM3
// CHECK-ERROR: ^