diff options
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 9580c10..99ac11b 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -408,7 +408,7 @@ Objective-C and Objective-C++ Dialects}. -ftree-parallelize-loops=@var{n} -ftree-pre -ftree-partial-pre -ftree-pta @gol -ftree-reassoc -ftree-sink -ftree-slsr -ftree-sra @gol -ftree-switch-conversion -ftree-tail-merge -ftree-ter @gol --ftree-vectorize -ftree-vrp @gol +-ftree-vectorize -ftree-vrp -funconstrained-commons @gol -funit-at-a-time -funroll-all-loops -funroll-loops @gol -funsafe-loop-optimizations -funsafe-math-optimizations -funswitch-loops @gol -fipa-ra -fvariable-expansion-in-unroller -fvect-cost-model -fvpt @gol @@ -6699,6 +6699,12 @@ the loop optimizer itself cannot prove that these assumptions are valid. If you use @option{-Wunsafe-loop-optimizations}, the compiler warns you if it finds this kind of loop. +@item -funconstrained-commons +@opindex funconstrained-commons +This option tells the compiler that variables declared in common blocks +(e.g. Fortran) may later be overridden with longer trailing arrays. This +prevents certain optimizations that depend on knowing the array bounds. + @item -fcrossjumping @opindex fcrossjumping Perform cross-jumping transformation. |