9df3be3ccb
Current code does not check that a register number is in the 0-31 range.
Sometimes the parser checks that later for some kinds of instructions,
but that leads to unclear / incorrect error messages like that:
% cat test.s
.text
lb $4, 8($32)
% llvm-mc test.s -triple=mips64-unknown-linux
test.s:2:10: error: expected memory with 16-bit signed offset
lb $4, 8($32)
^
Sometimes the parser just crashes:
% cat test.s
.text
lw $4, 8($32)
% llvm-mc test.s -triple=mips64-unknown-linux
This patch resolves the problem by checking that register number after
'$' sign is in the 0-31 range. If the number is out of the range the
parser shows the `invalid register number` error, but treats invalid
register number as a normal one to continue parsing and catch other
possible errors.
Differential Revision: https://reviews.llvm.org/D45919
llvm-svn: 330732
20 lines
1.6 KiB
ArmAsm
20 lines
1.6 KiB
ArmAsm
# Instructions that are invalid but currently emit the wrong error message.
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#
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# RUN: not llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips32r6 \
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# RUN: 2>%t1
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# RUN: FileCheck %s < %t1
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.set noat
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bc1any2f $fcc2,4 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
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bc1any2t $fcc2,4 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
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bc1any4f $fcc2,4 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
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bc1any4t $fcc2,4 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: unknown instruction
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ldc2 $1, -2049($12) # CHECK: :[[@LINE]]:9: error: instruction requires a CPU feature not currently enabled
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ldc2 $1, 2048($12) # CHECK: :[[@LINE]]:9: error: instruction requires a CPU feature not currently enabled
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lwc2 $1, -2049($4) # CHECK: :[[@LINE]]:9: error: instruction requires a CPU feature not currently enabled
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lwc2 $1, 2048($4) # CHECK: :[[@LINE]]:9: error: instruction requires a CPU feature not currently enabled
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sdc2 $1, -2049($16) # CHECK: :[[@LINE]]:9: error: instruction requires a CPU feature not currently enabled
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sdc2 $1, 2048($16) # CHECK: :[[@LINE]]:9: error: instruction requires a CPU feature not currently enabled
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swc2 $1, -2049($17) # CHECK: :[[@LINE]]:9: error: instruction requires a CPU feature not currently enabled
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swc2 $1, 2048($17) # CHECK: :[[@LINE]]:9: error: instruction requires a CPU feature not currently enabled
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