common.opt (fdelete-null-pointer-checks): Init to -1.
2015-05-04 Sandra Loosemore <sandra@codesourcery.com> gcc/ * common.opt (fdelete-null-pointer-checks): Init to -1. * config/nios2/elf.h (SUBTARGET_OVERRIDE_OPTIONS): Define to override flag_delete_null_pointer_checks default. * doc/invoke.texi (-fdelete-null-pointer-checks): Clarify behavior re address zero. Better document target-specific behavior. (-fisolate-errneous-paths-dereference): Mention relationship to -fdelete-null-pointer-checks. gcc/testsuite/ * lib/target-supports.exp (check_effective_target_keeps_null_pointer_checks): Clarify that this is for targets that disable -fdelete-null-pointer-checks, not default it to off. * gcc.dg/ipa/ipa-pta-14.c: Make dependence on -fdelete-null-pointer-checks explicit. * gcc.dg/tree-ssa/20030730-1.c: Likewise. * gcc.dg/tree-ssa/20030730-2.c: Likewise. * gcc.dg/tree-ssa/isolate-1.c: Likewise. * gcc.dg/tree-ssa/isolate-2.c: Likewise. * gcc.dg/tree-ssa/isolate-3.c: Likewise. * gcc.dg/tree-ssa/isolate-4.c: Likewise. * gcc.dg/tree-ssa/isolate-5.c: Likewise. * gcc.dg/tree-ssa/nonzero-1.c: Likewise. * gcc.dg/tree-ssa/pr20318.c: Likewise. * gcc.dg/tree-ssa/pr20701.c: Likewise. * gcc.dg/tree-ssa/pr20702.c: Likewise. * gcc.dg/tree-ssa/pr21086.c: Likewise. * gcc.dg/tree-ssa/pr21090.c: Likewise. * gcc.dg/tree-ssa/pr58480.c: Likewise. * gcc.dg/tree-ssa/pta-escape-1.c: Likewise. * gcc.dg/tree-ssa/pta-escape-2.c: Likewise. * gcc.dg/tree-ssa/pta-escape-3.c: Likewise. * gcc.dg/tree-ssa/ssa-vrp-thread-1.c: Likewise. * gcc.dg/tree-ssa/unreachable.c: Likewise. * gcc.dg/tree-ssa/vrp02.c: Likewise. * gcc.dg/tree-ssa/vrp07.c: Likewise. * gcc.dg/tree-ssa/vrp08.c: Likewise. * gcc.dg/tree-ssa/vrp55.c: Likewise. * g++.dg/cpp0x/static_assert9.C: Likewise. * g++.dg/tree-ssa/nonzero-1.C: Likewise. * g++.dg/tree-ssa/pr19476-1.C: Likewise. * g++.dg/tree-ssa/pr19476-2.C: Likewise. * g++.dg/tree-ssa/pr19476-5.C: Likewise. * g++.dg/tree-ssa/pr26406.C: Likewise. From-SVN: r222777
This commit is contained in:
Sandra Loosemore
Sandra Loosemore
parent
100c8e9e9d
commit
467d8d51f1
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@ -1,3 +1,13 @@
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2015-05-04 Sandra Loosemore <sandra@codesourcery.com>
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* common.opt (fdelete-null-pointer-checks): Init to -1.
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* config/nios2/elf.h (SUBTARGET_OVERRIDE_OPTIONS): Define to
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override flag_delete_null_pointer_checks default.
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* doc/invoke.texi (-fdelete-null-pointer-checks): Clarify
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behavior re address zero. Better document target-specific behavior.
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(-fisolate-errneous-paths-dereference): Mention relationship to
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-fdelete-null-pointer-checks.
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2015-05-04 Jakub Jelinek <jakub@redhat.com>
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PR tree-optimization/65984
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@ -1070,7 +1070,7 @@ Common Report Var(flag_delete_dead_exceptions) Init(0) Optimization
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Delete dead instructions that may throw exceptions
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fdelete-null-pointer-checks
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Common Report Var(flag_delete_null_pointer_checks) Init(1) Optimization
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Common Report Var(flag_delete_null_pointer_checks) Init(-1) Optimization
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Delete useless null pointer checks
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fdevirtualize-at-ltrans
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@ -50,3 +50,12 @@
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/* The ELF target doesn't support the Nios II Linux ABI. */
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#define TARGET_LINUX_ABI 0
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/* Default -fdelete-null-pointer-checks to off, to prevent the compiler
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from treating accesses to address zero as traps. On bare-metal Nios II
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targets address zero may legitimately be mapped to memory (e.g., the
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hardware description may specify this as the address of the interrupt
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vector). Users can override this on the command line to get the
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additional optimizations it enables. */
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#define SUBTARGET_OVERRIDE_OPTIONS \
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if (flag_delete_null_pointer_checks < 0) \
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flag_delete_null_pointer_checks = 0
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@ -8014,10 +8014,12 @@ Enabled by @option{-Os}.
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@item -fdelete-null-pointer-checks
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@opindex fdelete-null-pointer-checks
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Assume that programs cannot safely dereference null pointers, and that
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no code or data element resides there. This enables simple constant
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no code or data element resides at address zero.
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This option enables simple constant
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folding optimizations at all optimization levels. In addition, other
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optimization passes in GCC use this flag to control global dataflow
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analyses that eliminate useless checks for null pointers; these assume
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that a memory access to address zero always results in a trap, so
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that if a pointer is checked after it has already been dereferenced,
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it cannot be null.
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@ -8025,9 +8027,10 @@ Note however that in some environments this assumption is not true.
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Use @option{-fno-delete-null-pointer-checks} to disable this optimization
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for programs that depend on that behavior.
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Some targets, especially embedded ones, disable this option at all levels.
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Otherwise it is enabled at all levels: @option{-O0}, @option{-O1},
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@option{-O2}, @option{-O3}, @option{-Os}. Passes that use the information
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This option is enabled by default on most targets. On Nios II ELF, it
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defaults to off. On AVR and CR16, this option is completely disabled.
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Passes that use the dataflow information
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are enabled independently at different optimization levels.
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@item -fdevirtualize
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@ -8510,7 +8513,8 @@ This flag is enabled by default at @option{-O2} and @option{-Os}.
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Detect paths that trigger erroneous or undefined behavior due to
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dereferencing a null pointer. Isolate those paths from the main control
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flow and turn the statement with erroneous or undefined behavior into a trap.
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This flag is enabled by default at @option{-O2} and higher.
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This flag is enabled by default at @option{-O2} and higher and depends on
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@option{-fdelete-null-pointer-checks} also being enabled.
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@item -fisolate-erroneous-paths-attribute
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@opindex fisolate-erroneous-paths-attribute
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@ -1,3 +1,41 @@
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2015-05-04 Sandra Loosemore <sandra@codesourcery.com>
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* lib/target-supports.exp
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(check_effective_target_keeps_null_pointer_checks): Clarify that
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this is for targets that disable -fdelete-null-pointer-checks,
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not default it to off.
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* gcc.dg/ipa/ipa-pta-14.c: Make dependence on
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-fdelete-null-pointer-checks explicit.
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* gcc.dg/tree-ssa/20030730-1.c: Likewise.
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* gcc.dg/tree-ssa/20030730-2.c: Likewise.
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* gcc.dg/tree-ssa/isolate-1.c: Likewise.
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* gcc.dg/tree-ssa/isolate-2.c: Likewise.
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* gcc.dg/tree-ssa/isolate-3.c: Likewise.
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* gcc.dg/tree-ssa/isolate-4.c: Likewise.
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* gcc.dg/tree-ssa/isolate-5.c: Likewise.
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* gcc.dg/tree-ssa/nonzero-1.c: Likewise.
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* gcc.dg/tree-ssa/pr20318.c: Likewise.
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* gcc.dg/tree-ssa/pr20701.c: Likewise.
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* gcc.dg/tree-ssa/pr20702.c: Likewise.
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* gcc.dg/tree-ssa/pr21086.c: Likewise.
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* gcc.dg/tree-ssa/pr21090.c: Likewise.
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* gcc.dg/tree-ssa/pr58480.c: Likewise.
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* gcc.dg/tree-ssa/pta-escape-1.c: Likewise.
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* gcc.dg/tree-ssa/pta-escape-2.c: Likewise.
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* gcc.dg/tree-ssa/pta-escape-3.c: Likewise.
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* gcc.dg/tree-ssa/ssa-vrp-thread-1.c: Likewise.
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* gcc.dg/tree-ssa/unreachable.c: Likewise.
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* gcc.dg/tree-ssa/vrp02.c: Likewise.
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* gcc.dg/tree-ssa/vrp07.c: Likewise.
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* gcc.dg/tree-ssa/vrp08.c: Likewise.
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* gcc.dg/tree-ssa/vrp55.c: Likewise.
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* g++.dg/cpp0x/static_assert9.C: Likewise.
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* g++.dg/tree-ssa/nonzero-1.C: Likewise.
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* g++.dg/tree-ssa/pr19476-1.C: Likewise.
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* g++.dg/tree-ssa/pr19476-2.C: Likewise.
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* g++.dg/tree-ssa/pr19476-5.C: Likewise.
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* g++.dg/tree-ssa/pr26406.C: Likewise.
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2015-05-04 Jakub Jelinek <jakub@redhat.com>
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PR tree-optimization/65984
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@ -1,5 +1,7 @@
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// PR c++/58837
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// { dg-require-effective-target c++11 }
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// { dg-skip-if "" keeps_null_pointer_checks }
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// { dg-options "-fdelete-null-pointer-checks" }
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void f();
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static_assert(f, "");
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@ -1,5 +1,7 @@
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/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-ccp1" } */
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/* { dg-options "-O2 -fdump-tree-ccp1 -fdelete-null-pointer-checks" } */
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/* { dg-skip-if "" keeps_null_pointer_checks } */
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inline void t()
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{
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}
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@ -1,5 +1,6 @@
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/* { dg-do compile } */
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/* { dg-options "-O -fdump-tree-ccp1" } */
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/* { dg-options "-O -fdump-tree-ccp1 -fdelete-null-pointer-checks" } */
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/* { dg-skip-if "" keeps_null_pointer_checks } */
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// See pr19476-5.C for a version without including <new>.
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#include <new>
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/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-optimized" } */
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/* { dg-options "-O2 -fdump-tree-optimized -fdelete-null-pointer-checks" } */
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/* { dg-skip-if "" keeps_null_pointer_checks } */
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#include <new>
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@ -1,5 +1,6 @@
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/* { dg-do compile } */
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/* { dg-options "-O -fdump-tree-ccp1" } */
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/* { dg-options "-O -fdump-tree-ccp1 -fdelete-null-pointer-checks" } */
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/* { dg-skip-if "" keeps_null_pointer_checks } */
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// See pr19476-1.C for a version that includes <new>.
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@ -1,5 +1,6 @@
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/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-optimized" } */
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/* { dg-options "-O2 -fdump-tree-optimized -fdelete-null-pointer-checks" } */
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/* { dg-skip-if "" keeps_null_pointer_checks } */
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int *f(int *b)
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{
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@ -1,5 +1,5 @@
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/* { dg-do run } */
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/* { dg-options "-O2 -fipa-pta -fno-tree-fre -fno-tree-sra -fdump-ipa-pta-details" } */
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/* { dg-options "-O2 -fipa-pta -fno-tree-fre -fno-tree-sra -fdump-ipa-pta-details -fdelete-null-pointer-checks" } */
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struct X {
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int i;
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@ -1,5 +1,5 @@
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/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-dom2" } */
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/* { dg-options "-O2 -fdump-tree-dom2 -fdelete-null-pointer-checks" } */
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extern void exit (int);
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extern void *ggc_alloc (__SIZE_TYPE__);
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@ -18,7 +18,7 @@ foo (int attr_kind, unsigned long offset)
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exit (0);
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}
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/* There should be no IF conditionals, unless target has fno-delete-null-pointer-checks */
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/* There should be no IF conditionals, unless target disables -fdelete-null-pointer-checks */
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/* { dg-final { scan-tree-dump-times "if " 0 "dom2" { target { ! keeps_null_pointer_checks } } } } */
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/* { dg-final { scan-tree-dump "if " "dom2" { target { keeps_null_pointer_checks } } } } */
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@ -1,5 +1,5 @@
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/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-dom2" } */
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/* { dg-options "-O2 -fdump-tree-dom2 -fdelete-null-pointer-checks" } */
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extern void exit (int);
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extern void *ggc_alloc (__SIZE_TYPE__);
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@ -18,7 +18,7 @@ foo (int attr_kind, unsigned long offset)
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exit (0);
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}
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/* There should be no IF conditionals, unless target has fno-delete-null-pointer-checks */
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/* There should be no IF conditionals, unless target disables -fdelete-null-pointer-checks */
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/* { dg-final { scan-tree-dump-times "if " 0 "dom2" { target { ! keeps_null_pointer_checks } } } } */
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/* { dg-final { scan-tree-dump "if " "dom2" { target { keeps_null_pointer_checks } } } } */
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@ -1,6 +1,6 @@
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/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-isolate-paths" } */
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/* { dg-options "-O2 -fdump-tree-isolate-paths -fdelete-null-pointer-checks" } */
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/* { dg-skip-if "" keeps_null_pointer_checks } */
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@ -1,5 +1,5 @@
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/* { dg-do compile } */
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/* { dg-options "-O2 -fisolate-erroneous-paths-attribute -fdump-tree-isolate-paths -fdump-tree-phicprop1" } */
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/* { dg-options "-O2 -fdelete-null-pointer-checks -fisolate-erroneous-paths-attribute -fdump-tree-isolate-paths -fdump-tree-phicprop1" } */
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/* { dg-skip-if "" keeps_null_pointer_checks } */
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@ -1,5 +1,5 @@
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/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-isolate-paths" } */
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/* { dg-options "-O2 -fdump-tree-isolate-paths -fdelete-null-pointer-checks" } */
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/* { dg-skip-if "" keeps_null_pointer_checks } */
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@ -1,5 +1,5 @@
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/* { dg-do compile } */
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/* { dg-options "-O2 -fisolate-erroneous-paths-attribute -fdump-tree-isolate-paths -fdump-tree-phicprop1" } */
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/* { dg-options "-O2 -fdelete-null-pointer-checks -fisolate-erroneous-paths-attribute -fdump-tree-isolate-paths -fdump-tree-phicprop1" } */
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/* { dg-skip-if "" keeps_null_pointer_checks } */
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@ -1,5 +1,5 @@
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/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-isolate-paths -fdump-tree-optimized" } */
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/* { dg-options "-O2 -fdelete-null-pointer-checks -fdump-tree-isolate-paths -fdump-tree-optimized" } */
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/* { dg-skip-if "" keeps_null_pointer_checks } */
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struct demangle_component
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@ -1,5 +1,7 @@
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/* { dg-do compile } */
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/* { dg-options "-O2" } */
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/* { dg-options "-O2 -fdelete-null-pointer-checks" } */
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/* { dg-skip-if "" keeps_null_pointer_checks } */
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extern int a; /* { dg-error "declared weak after being used" } */
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int
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t()
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@ -1,5 +1,5 @@
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/* { dg-do compile { target { ! keeps_null_pointer_checks } } } */
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/* { dg-options "-O2 -fdump-tree-original -fdump-tree-vrp1" } */
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/* { dg-options "-O2 -fdump-tree-original -fdump-tree-vrp1 -fdelete-null-pointer-checks" } */
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extern int* f(int) __attribute__((returns_nonnull));
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extern void eliminate ();
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@ -1,5 +1,5 @@
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/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-vrp1 -fno-early-inlining" } */
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/* { dg-options "-O2 -fdump-tree-vrp1 -fno-early-inlining -fdelete-null-pointer-checks" } */
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typedef struct {
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int code;
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@ -35,7 +35,7 @@ can_combine_p (rtx insn, rtx elt)
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return 0;
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}
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/* Target with fno-delete-null-pointer-checks should not fold checks */
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/* Target disabling -fdelete-null-pointer-checks should not fold checks */
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/* { dg-final { scan-tree-dump-times "Folding predicate.*to 0" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */
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/* { dg-final { scan-tree-dump-times "Folding predicate.*to 0" 0 "vrp1" { target { keeps_null_pointer_checks } } } } */
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/* { dg-final { cleanup-tree-dump "vrp1" } } */
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immediate successors of the basic block. */
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/* { dg-do compile } */
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/* { dg-options "-O2 -fno-tree-dominator-opts -fdump-tree-vrp1-details" } */
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/* { dg-options "-O2 -fno-tree-dominator-opts -fdump-tree-vrp1-details -fdelete-null-pointer-checks" } */
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extern void bar (int);
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@ -25,7 +25,7 @@ foo (int *p, int b)
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return a;
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}
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/* Target with fno-delete-null-pointer-checks should not fold checks */
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/* Target disabling -fdelete-null-pointer-checks should not fold checks */
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/* { dg-final { scan-tree-dump-times "Folding predicate" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */
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/* { dg-final { scan-tree-dump-times "Folding predicate" 0 "vrp1" { target { keeps_null_pointer_checks } } } } */
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/* { dg-final { cleanup-tree-dump "vrp1" } } */
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@ -1,5 +1,5 @@
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/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-vrp1 -fdump-tree-dce1" } */
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/* { dg-options "-O2 -fdump-tree-vrp1 -fdump-tree-dce1 -fdelete-null-pointer-checks" } */
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int
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foo (int *p)
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@ -15,7 +15,7 @@ foo (int *p)
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return 0;
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}
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/* Target with fno-delete-null-pointer-checks should not fold checks */
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/* Target disabling -fdelete-null-pointer-checks should not fold checks */
|
||||
/* { dg-final { scan-tree-dump "Folding predicate " "vrp1" { target { ! keeps_null_pointer_checks } } } } */
|
||||
/* { dg-final { scan-tree-dump-times "Folding predicate " 0 "vrp1" { target { keeps_null_pointer_checks } } } } */
|
||||
/* { dg-final { scan-tree-dump-not "b_. =" "dce1" { target { ! avr-*-* } } } } */
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/* { dg-do compile } */
|
||||
/* { dg-options "-O2 -fdump-tree-vrp1" } */
|
||||
/* { dg-options "-O2 -fdump-tree-vrp1 -fdelete-null-pointer-checks" } */
|
||||
|
||||
int g, h;
|
||||
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/* { dg-do compile { target { ! keeps_null_pointer_checks } } } */
|
||||
/* { dg-options "-O2 -fdump-tree-vrp1" } */
|
||||
/* { dg-options "-O2 -fdump-tree-vrp1 -fdelete-null-pointer-checks" } */
|
||||
|
||||
extern void eliminate (void);
|
||||
extern void* f1 (void *a, void *b) __attribute__((nonnull));
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/* { dg-do run } */
|
||||
/* { dg-options "-O -fdump-tree-alias-details" } */
|
||||
/* { dg-options "-O -fdump-tree-alias-details -fdelete-null-pointer-checks" } */
|
||||
|
||||
int *i;
|
||||
void __attribute__((noinline))
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/* { dg-do run } */
|
||||
/* { dg-options "-O -fdump-tree-alias-details" } */
|
||||
/* { dg-options "-O -fdump-tree-alias-details -fdelete-null-pointer-checks" } */
|
||||
|
||||
int *i;
|
||||
void __attribute__((noinline))
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/* { dg-do run } */
|
||||
/* { dg-options "-O -fdump-tree-alias-details" } */
|
||||
/* { dg-options "-O -fdump-tree-alias-details -fdelete-null-pointer-checks" } */
|
||||
|
||||
int *i;
|
||||
void __attribute__((noinline))
|
||||
|
|
|
|||
|
|
@ -1,5 +1,6 @@
|
|||
/* { dg-do compile } */
|
||||
/* { dg-options "-O2 -fdump-tree-vrp1-details" } */
|
||||
/* { dg-options "-O2 -fdump-tree-vrp1-details -fdelete-null-pointer-checks" } */
|
||||
/* { dg-skip-if "" keeps_null_pointer_checks } */
|
||||
|
||||
void oof (void);
|
||||
struct basic_block_def;
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/* { dg-do compile } */
|
||||
/* { dg-options "-O1 -fdump-tree-optimized" } */
|
||||
/* { dg-options "-O1 -fdump-tree-optimized -fdelete-null-pointer-checks" } */
|
||||
static void bad_boy()
|
||||
{
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/* { dg-do compile } */
|
||||
/* { dg-options "-O2 -fdump-tree-vrp1" } */
|
||||
/* { dg-options "-O2 -fdump-tree-vrp1 -fdelete-null-pointer-checks" } */
|
||||
|
||||
struct A
|
||||
{
|
||||
|
|
@ -20,7 +20,7 @@ foo (struct A *p, struct A *q)
|
|||
if (p)
|
||||
return x + p->b;
|
||||
}
|
||||
/* Target with fno-delete-null-pointer-checks should not fold check */
|
||||
/* Target disabling -fdelete-null-pointer-checks should not fold check */
|
||||
/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */
|
||||
/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 0 "vrp1" { target { keeps_null_pointer_checks } } } } */
|
||||
/* { dg-final { cleanup-tree-dump "vrp1" } } */
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/* { dg-do compile } */
|
||||
/* { dg-options "-O2 -fdump-tree-vrp1-details" } */
|
||||
/* { dg-options "-O2 -fdump-tree-vrp1-details -fdelete-null-pointer-checks" } */
|
||||
|
||||
int
|
||||
foo (int i, int *p)
|
||||
|
|
@ -30,7 +30,7 @@ foo (int i, int *p)
|
|||
|
||||
return i;
|
||||
}
|
||||
/* Target with fno-delete-null-pointer-checks should not fold checks */
|
||||
/* Target disabling -fdelete-null-pointer-checks should not fold checks */
|
||||
/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 1 "vrp1" } } */
|
||||
/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 0" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */
|
||||
/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 0" 0 "vrp1" { target { keeps_null_pointer_checks } } } } */
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/* { dg-do compile } */
|
||||
/* { dg-options "-O2 -fno-tree-fre -fdump-tree-vrp1-details" } */
|
||||
/* { dg-options "-O2 -fno-tree-fre -fdump-tree-vrp1-details -fdelete-null-pointer-checks" } */
|
||||
|
||||
/* Compile with -fno-tree-fre -O2 to prevent CSEing *p. */
|
||||
int
|
||||
|
|
@ -18,7 +18,7 @@ foo (int a, int *p)
|
|||
|
||||
return a;
|
||||
}
|
||||
/* Target with fno-delete-null-pointer-checks should not fold checks */
|
||||
/* Target disabling -fdelete-null-pointer-checks should not fold checks */
|
||||
/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */
|
||||
/* { dg-final { scan-tree-dump-times "PREDICATE: p_.* ne_expr 0" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */
|
||||
/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 0 "vrp1" { target { keeps_null_pointer_checks } } } } */
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/* { dg-do compile } */
|
||||
/* { dg-options "-O2 -fdump-tree-vrp1-blocks-vops-details" } */
|
||||
/* { dg-options "-O2 -fdump-tree-vrp1-blocks-vops-details -fdelete-null-pointer-checks" } */
|
||||
|
||||
void arf (void);
|
||||
|
||||
|
|
|
|||
|
|
@ -458,9 +458,11 @@ proc check_effective_target_trampolines { } {
|
|||
}
|
||||
|
||||
# Return 1 if according to target_info struct and explicit target list
|
||||
# target is supposed to keep null pointer checks. This could be due to
|
||||
# use of option fno-delete-null-pointer-checks or hardwired in target.
|
||||
|
||||
# target disables -fdelete-null-pointer-checks. Targets should return 0
|
||||
# if they simply default to -fno-delete-null-pointer-checks but obey
|
||||
# -fdelete-null-pointer-checks when passed explicitly (and tests that
|
||||
# depend on this option should do that).
|
||||
|
||||
proc check_effective_target_keeps_null_pointer_checks { } {
|
||||
if [target_info exists keeps_null_pointer_checks] {
|
||||
return 1
|
||||
|
|
|
|||
Loading…
Reference in New Issue