gcc/doc/gccint/gimple/class-hierarchy-of-gimple-statements.rst

   1 ..
   2   Copyright 1988-2022 Free Software Foundation, Inc.
   3   This is part of the GCC manual.
   4   For copying conditions, see the copyright.rst file.
   5
   6 .. index:: GIMPLE class hierarchy
   7
   8 .. _class-hierarchy-of-gimple-statements:
   9
  10 Class hierarchy of GIMPLE statements
  11 ************************************
  12
  13 The following diagram shows the C++ inheritance hierarchy of statement
  14 kinds, along with their relationships to ``GSS_`` values (layouts) and
  15 ``GIMPLE_`` values (codes):
  16
  17 .. code-block:: c++
  18
  19      gimple
  20        |    layout: GSS_BASE
  21        |    used for 4 codes: GIMPLE_ERROR_MARK
  22        |                      GIMPLE_NOP
  23        |                      GIMPLE_OMP_SECTIONS_SWITCH
  24        |                      GIMPLE_PREDICT
  25        |
  26        + gimple_statement_with_ops_base
  27        |   |    (no GSS layout)
  28        |   |
  29        |   + gimple_statement_with_ops
  30        |   |   |    layout: GSS_WITH_OPS
  31        |   |   |
  32        |   |   + gcond
  33        |   |   |     code: GIMPLE_COND
  34        |   |   |
  35        |   |   + gdebug
  36        |   |   |     code: GIMPLE_DEBUG
  37        |   |   |
  38        |   |   + ggoto
  39        |   |   |     code: GIMPLE_GOTO
  40        |   |   |
  41        |   |   + glabel
  42        |   |   |     code: GIMPLE_LABEL
  43        |   |   |
  44        |   |   + gswitch
  45        |   |         code: GIMPLE_SWITCH
  46        |   |
  47        |   + gimple_statement_with_memory_ops_base
  48        |       |    layout: GSS_WITH_MEM_OPS_BASE
  49        |       |
  50        |       + gimple_statement_with_memory_ops
  51        |       |   |    layout: GSS_WITH_MEM_OPS
  52        |       |   |
  53        |       |   + gassign
  54        |       |   |    code GIMPLE_ASSIGN
  55        |       |   |
  56        |       |   + greturn
  57        |       |        code GIMPLE_RETURN
  58        |       |
  59        |       + gcall
  60        |       |        layout: GSS_CALL, code: GIMPLE_CALL
  61        |       |
  62        |       + gasm
  63        |       |        layout: GSS_ASM, code: GIMPLE_ASM
  64        |       |
  65        |       + gtransaction
  66        |                layout: GSS_TRANSACTION, code: GIMPLE_TRANSACTION
  67        |
  68        + gimple_statement_omp
  69        |   |    layout: GSS_OMP.  Used for code GIMPLE_OMP_SECTION
  70        |   |
  71        |   + gomp_critical
  72        |   |        layout: GSS_OMP_CRITICAL, code: GIMPLE_OMP_CRITICAL
  73        |   |
  74        |   + gomp_for
  75        |   |        layout: GSS_OMP_FOR, code: GIMPLE_OMP_FOR
  76        |   |
  77        |   + gomp_parallel_layout
  78        |   |   |    layout: GSS_OMP_PARALLEL_LAYOUT
  79        |   |   |
  80        |   |   + gimple_statement_omp_taskreg
  81        |   |   |   |
  82        |   |   |   + gomp_parallel
  83        |   |   |   |        code: GIMPLE_OMP_PARALLEL
  84        |   |   |   |
  85        |   |   |   + gomp_task
  86        |   |   |            code: GIMPLE_OMP_TASK
  87        |   |   |
  88        |   |   + gimple_statement_omp_target
  89        |   |            code: GIMPLE_OMP_TARGET
  90        |   |
  91        |   + gomp_sections
  92        |   |        layout: GSS_OMP_SECTIONS, code: GIMPLE_OMP_SECTIONS
  93        |   |
  94        |   + gimple_statement_omp_single_layout
  95        |       |    layout: GSS_OMP_SINGLE_LAYOUT
  96        |       |
  97        |       + gomp_single
  98        |       |        code: GIMPLE_OMP_SINGLE
  99        |       |
 100        |       + gomp_teams
 101        |                code: GIMPLE_OMP_TEAMS
 102        |
 103        + gbind
 104        |        layout: GSS_BIND, code: GIMPLE_BIND
 105        |
 106        + gcatch
 107        |        layout: GSS_CATCH, code: GIMPLE_CATCH
 108        |
 109        + geh_filter
 110        |        layout: GSS_EH_FILTER, code: GIMPLE_EH_FILTER
 111        |
 112        + geh_else
 113        |        layout: GSS_EH_ELSE, code: GIMPLE_EH_ELSE
 114        |
 115        + geh_mnt
 116        |        layout: GSS_EH_MNT, code: GIMPLE_EH_MUST_NOT_THROW
 117        |
 118        + gphi
 119        |        layout: GSS_PHI, code: GIMPLE_PHI
 120        |
 121        + gimple_statement_eh_ctrl
 122        |   |    layout: GSS_EH_CTRL
 123        |   |
 124        |   + gresx
 125        |   |        code: GIMPLE_RESX
 126        |   |
 127        |   + geh_dispatch
 128        |            code: GIMPLE_EH_DISPATCH
 129        |
 130        + gtry
 131        |        layout: GSS_TRY, code: GIMPLE_TRY
 132        |
 133        + gimple_statement_wce
 134        |        layout: GSS_WCE, code: GIMPLE_WITH_CLEANUP_EXPR
 135        |
 136        + gomp_continue
 137        |        layout: GSS_OMP_CONTINUE, code: GIMPLE_OMP_CONTINUE
 138        |
 139        + gomp_atomic_load
 140        |        layout: GSS_OMP_ATOMIC_LOAD, code: GIMPLE_OMP_ATOMIC_LOAD
 141        |
 142        + gimple_statement_omp_atomic_store_layout
 143            |    layout: GSS_OMP_ATOMIC_STORE_LAYOUT,
 144            |    code: GIMPLE_OMP_ATOMIC_STORE
 145            |
 146            + gomp_atomic_store
 147            |        code: GIMPLE_OMP_ATOMIC_STORE
 148            |
 149            + gomp_return
 150                     code: GIMPLE_OMP_RETURN