gccrs: Add minus sign compilation for LiteralPattern

GIMPLE output for literalpattern_neg.rs test case:

...
  x = -55;
  RUSTTMP.2 = x;
  if (RUSTTMP.2 == 55) goto <D.113>; else goto <D.114>;
  <D.113>:
  {
    RUSTTMP.1 = 1;
    goto <D.107>;
  }
  <D.114>:
  if (RUSTTMP.2 == -55) goto <D.115>; else goto <D.116>;
  <D.115>:
  {
    RUSTTMP.1 = 0;
    goto <D.107>;
  }
  <D.116>:
  if (1 != 0) goto <D.117>; else goto <D.118>;
  <D.117>:
  {
    RUSTTMP.1 = 1;
    goto <D.107>;
  }
...

gcc/rust/ChangeLog:

	* parse/rust-parse-impl.h (parse_literal_or_range_pattern): Parse minus sign
	properly for LiteralPattern.
	* ast/rust-pattern.h (LiteralPattern): Add has_minus boolean for LiteralPattern.
	* hir/tree/rust-hir-pattern.h (LiteralPattern): Ditto.
	* ast/rust-pattern.cc (LiteralPattern::as_string): Update to include minus sign
	if present.
	* hir/tree/rust-hir.cc (LiteralPattern::as_string): Ditto.
	* hir/rust-ast-lower-pattern.cc (visit(LiteralPattern)): Pass has_minus boolean
	from AST to HIR.
	* backend/rust-compile-pattern.cc (CompilePatternCheckExpr::visit(LiteralPattern)):
	Compile litexpr as negative if minus sign is present.

Signed-off-by: Yap Zhi Heng <yapzhhg@gmail.com>

0 files changed, 0 insertions, 0 deletions