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| author | Daniel Kraft <d@domob.eu> | 2010-12-04 10:27:17 +0100 |
|---|---|---|
| committer | Daniel Kraft <domob@gcc.gnu.org> | 2010-12-04 10:27:17 +0100 |
| commit | 995d4d1cb5556ae6355234619cfbe187b2ec8d30 (patch) | |
| tree | 22ca52b12eba47e7c8d2c8d561065cbb8a2309cb /gcc/fortran/trans-expr.c | |
| parent | 9b2b801af5011d6b1f92899f682107776019766c (diff) | |
| download | gcc-995d4d1cb5556ae6355234619cfbe187b2ec8d30.zip gcc-995d4d1cb5556ae6355234619cfbe187b2ec8d30.tar.gz gcc-995d4d1cb5556ae6355234619cfbe187b2ec8d30.tar.bz2 | |
re PR fortran/46794 (ICE on valid code involving power of small integer kinds)
2010-12-04 Daniel Kraft <d@domob.eu>
PR fortran/46794
* trans-expr.c (gfc_conv_power_op): Handle kind of result expression
correctly for integer kind 1 and 2 operands.
2010-12-04 Daniel Kraft <d@domob.eu>
PR fortran/46794
* gfortran.dg/power2.f90: New test.
From-SVN: r167453
Diffstat (limited to 'gcc/fortran/trans-expr.c')
| -rw-r--r-- | gcc/fortran/trans-expr.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/gcc/fortran/trans-expr.c b/gcc/fortran/trans-expr.c index 5857c0d..46f80f7 100644 --- a/gcc/fortran/trans-expr.c +++ b/gcc/fortran/trans-expr.c @@ -976,6 +976,7 @@ gfc_conv_power_op (gfc_se * se, gfc_expr * expr) tree gfc_int4_type_node; int kind; int ikind; + int res_ikind_1, res_ikind_2; gfc_se lse; gfc_se rse; tree fndecl = NULL; @@ -996,6 +997,13 @@ gfc_conv_power_op (gfc_se * se, gfc_expr * expr) gfc_int4_type_node = gfc_get_int_type (4); + /* In case of integer operands with kinds 1 or 2, we call the integer kind 4 + library routine. But in the end, we have to convert the result back + if this case applies -- with res_ikind_K, we keep track whether operand K + falls into this case. */ + res_ikind_1 = -1; + res_ikind_2 = -1; + kind = expr->value.op.op1->ts.kind; switch (expr->value.op.op2->ts.type) { @@ -1006,6 +1014,7 @@ gfc_conv_power_op (gfc_se * se, gfc_expr * expr) case 1: case 2: rse.expr = convert (gfc_int4_type_node, rse.expr); + res_ikind_2 = ikind; /* Fall through. */ case 4: @@ -1028,7 +1037,10 @@ gfc_conv_power_op (gfc_se * se, gfc_expr * expr) case 1: case 2: if (expr->value.op.op1->ts.type == BT_INTEGER) - lse.expr = convert (gfc_int4_type_node, lse.expr); + { + lse.expr = convert (gfc_int4_type_node, lse.expr); + res_ikind_1 = kind; + } else gcc_unreachable (); /* Fall through. */ @@ -1121,6 +1133,15 @@ gfc_conv_power_op (gfc_se * se, gfc_expr * expr) se->expr = build_call_expr_loc (input_location, fndecl, 2, lse.expr, rse.expr); + + /* Convert the result back if it is of wrong integer kind. */ + if (res_ikind_1 != -1 && res_ikind_2 != -1) + { + /* We want the maximum of both operand kinds as result. */ + if (res_ikind_1 < res_ikind_2) + res_ikind_1 = res_ikind_2; + se->expr = convert (gfc_get_int_type (res_ikind_1), se->expr); + } } |