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LoongArch: Fixed precedence of expression operators in instructions

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The precedence of the operators "+" and "-" in the current loongarch
instruction expression is higher than "<<" and ">>", which is different
from the explanation in the user guide.

We modified the precedence of "<<" and ">>" to be higher than "+" and "-".
This commit is contained in:
Lulu Cai 2024-09-02 12:05:54 +08:00 committed by liuzhensong
parent 4bc828f876
commit 6c2358b90a
3 changed files with 23 additions and 12 deletions
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24
gas/config/loongarch-parse.y
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@ -368,24 +368,24 @@ multiplicative_expression
| multiplicative_expression '%' unary_expression {emit_bin ('%');}
;
additive_expression
shift_expression
: multiplicative_expression
| additive_expression '+' multiplicative_expression {emit_bin ('+');}
| additive_expression '-' multiplicative_expression {emit_bin ('-');}
| shift_expression LEFT_OP multiplicative_expression {emit_bin (LEFT_OP);}
| shift_expression RIGHT_OP multiplicative_expression {emit_bin (RIGHT_OP);}
;
shift_expression
: additive_expression
| shift_expression LEFT_OP additive_expression {emit_bin (LEFT_OP);}
| shift_expression RIGHT_OP additive_expression {emit_bin (RIGHT_OP);}
additive_expression
: shift_expression
| additive_expression '+' shift_expression {emit_bin ('+');}
| additive_expression '-' shift_expression {emit_bin ('-');}
;
relational_expression
: shift_expression
| relational_expression '<' shift_expression {emit_bin ('<');}
| relational_expression '>' shift_expression {emit_bin ('>');}
| relational_expression LE_OP shift_expression {emit_bin (LE_OP);}
| relational_expression GE_OP shift_expression {emit_bin (GE_OP);}
: additive_expression
| relational_expression '<' additive_expression {emit_bin ('<');}
| relational_expression '>' additive_expression {emit_bin ('>');}
| relational_expression LE_OP additive_expression {emit_bin (LE_OP);}
| relational_expression GE_OP additive_expression {emit_bin (GE_OP);}
;
equality_expression

10
gas/testsuite/gas/loongarch/insn_expr.d Normal file
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@ -0,0 +1,10 @@
#as:
#objdump: -d
.*: file format .*
Disassembly of section \.text:
0+ <\.text>:
0: 02c00ca4 addi.d \$a0, \$a1, 3

1
gas/testsuite/gas/loongarch/insn_expr.s Normal file
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@ -0,0 +1 @@
addi.d $a0,$a1,(8 >> 2 + 1)