gccint: Class hierarchy of GIMPLE statements

1 
1 12.2 Class hierarchy of GIMPLE statements
1 =========================================
1 
1 The following diagram shows the C++ inheritance hierarchy of statement
1 kinds, along with their relationships to 'GSS_' values (layouts) and
1 'GIMPLE_' values (codes):
1 
1         gimple
1           |    layout: GSS_BASE
1           |    used for 4 codes: GIMPLE_ERROR_MARK
1           |                      GIMPLE_NOP
1           |                      GIMPLE_OMP_SECTIONS_SWITCH
1           |                      GIMPLE_PREDICT
1           |
1           + gimple_statement_with_ops_base
1           |   |    (no GSS layout)
1           |   |
1           |   + gimple_statement_with_ops
1           |   |   |    layout: GSS_WITH_OPS
1           |   |   |
1           |   |   + gcond
1           |   |   |     code: GIMPLE_COND
1           |   |   |
1           |   |   + gdebug
1           |   |   |     code: GIMPLE_DEBUG
1           |   |   |
1           |   |   + ggoto
1           |   |   |     code: GIMPLE_GOTO
1           |   |   |
1           |   |   + glabel
1           |   |   |     code: GIMPLE_LABEL
1           |   |   |
1           |   |   + gswitch
1           |   |         code: GIMPLE_SWITCH
1           |   |
1           |   + gimple_statement_with_memory_ops_base
1           |       |    layout: GSS_WITH_MEM_OPS_BASE
1           |       |
1           |       + gimple_statement_with_memory_ops
1           |       |   |    layout: GSS_WITH_MEM_OPS
1           |       |   |
1           |       |   + gassign
1           |       |   |    code GIMPLE_ASSIGN
1           |       |   |
1           |       |   + greturn
1           |       |        code GIMPLE_RETURN
1           |       |
1           |       + gcall
1           |       |        layout: GSS_CALL, code: GIMPLE_CALL
1           |       |
1           |       + gasm
1           |       |        layout: GSS_ASM, code: GIMPLE_ASM
1           |       |
1           |       + gtransaction
1           |                layout: GSS_TRANSACTION, code: GIMPLE_TRANSACTION
1           |
1           + gimple_statement_omp
1           |   |    layout: GSS_OMP.  Used for code GIMPLE_OMP_SECTION
1           |   |
1           |   + gomp_critical
1           |   |        layout: GSS_OMP_CRITICAL, code: GIMPLE_OMP_CRITICAL
1           |   |
1           |   + gomp_for
1           |   |        layout: GSS_OMP_FOR, code: GIMPLE_OMP_FOR
1           |   |
1           |   + gomp_parallel_layout
1           |   |   |    layout: GSS_OMP_PARALLEL_LAYOUT
1           |   |   |
1           |   |   + gimple_statement_omp_taskreg
1           |   |   |   |
1           |   |   |   + gomp_parallel
1           |   |   |   |        code: GIMPLE_OMP_PARALLEL
1           |   |   |   |
1           |   |   |   + gomp_task
1           |   |   |            code: GIMPLE_OMP_TASK
1           |   |   |
1           |   |   + gimple_statement_omp_target
1           |   |            code: GIMPLE_OMP_TARGET
1           |   |
1           |   + gomp_sections
1           |   |        layout: GSS_OMP_SECTIONS, code: GIMPLE_OMP_SECTIONS
1           |   |
1           |   + gimple_statement_omp_single_layout
1           |       |    layout: GSS_OMP_SINGLE_LAYOUT
1           |       |
1           |       + gomp_single
1           |       |        code: GIMPLE_OMP_SINGLE
1           |       |
1           |       + gomp_teams
1           |                code: GIMPLE_OMP_TEAMS
1           |
1           + gbind
1           |        layout: GSS_BIND, code: GIMPLE_BIND
1           |
1           + gcatch
1           |        layout: GSS_CATCH, code: GIMPLE_CATCH
1           |
1           + geh_filter
1           |        layout: GSS_EH_FILTER, code: GIMPLE_EH_FILTER
1           |
1           + geh_else
1           |        layout: GSS_EH_ELSE, code: GIMPLE_EH_ELSE
1           |
1           + geh_mnt
1           |        layout: GSS_EH_MNT, code: GIMPLE_EH_MUST_NOT_THROW
1           |
1           + gphi
1           |        layout: GSS_PHI, code: GIMPLE_PHI
1           |
1           + gimple_statement_eh_ctrl
1           |   |    layout: GSS_EH_CTRL
1           |   |
1           |   + gresx
1           |   |        code: GIMPLE_RESX
1           |   |
1           |   + geh_dispatch
1           |            code: GIMPLE_EH_DISPATCH
1           |
1           + gtry
1           |        layout: GSS_TRY, code: GIMPLE_TRY
1           |
1           + gimple_statement_wce
1           |        layout: GSS_WCE, code: GIMPLE_WITH_CLEANUP_EXPR
1           |
1           + gomp_continue
1           |        layout: GSS_OMP_CONTINUE, code: GIMPLE_OMP_CONTINUE
1           |
1           + gomp_atomic_load
1           |        layout: GSS_OMP_ATOMIC_LOAD, code: GIMPLE_OMP_ATOMIC_LOAD
1           |
1           + gimple_statement_omp_atomic_store_layout
1               |    layout: GSS_OMP_ATOMIC_STORE_LAYOUT,
1               |    code: GIMPLE_OMP_ATOMIC_STORE
1               |
1               + gomp_atomic_store
1               |        code: GIMPLE_OMP_ATOMIC_STORE
1               |
1               + gomp_return
1                        code: GIMPLE_OMP_RETURN
1