Hi, This patch changes rtx cost for address constants to 0 similar to what we have in address cost hook beacuse we expect them to be propagated into address expression anyway. Bootstrapped and tested on x86_64-unknown-linux-gnu. OK for trunk or stage 1?
Thanks, Ilya -- gcc/ 2015-03-10 Ilya Enkovich <ilya.enkov...@intel.com> PR target/65103 * gcc/config/i386/i386.c (ix86_rtx_costs): We want to propagate link time constants into adress expressions and therefore set their cost to 0. gcc/testsuite/ 2015-03-10 Ilya Enkovich <ilya.enkov...@intel.com> PR target/65103 * gcc.target/i386/pr65103-3.c: New. diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index b3971b8..341a157 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -42039,7 +42039,8 @@ ix86_rtx_costs (rtx x, int code_i, int outer_code_i, int opno, int *total, && !(TARGET_64BIT && (GET_CODE (x) == LABEL_REF || (GET_CODE (x) == SYMBOL_REF - && SYMBOL_REF_LOCAL_P (x))))) + && SYMBOL_REF_LOCAL_P (x)))) + && (TARGET_64BIT || GET_CODE (x) != CONST)) *total = 1; else *total = 0; diff --git a/gcc/testsuite/gcc.target/i386/pr65103-3.c b/gcc/testsuite/gcc.target/i386/pr65103-3.c new file mode 100644 index 0000000..1481bf9 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr65103-3.c @@ -0,0 +1,18 @@ +/* { dg-do compile { target ia32 } } */ +/* { dg-options "-m32 -O2 -fPIE" } */ +/* { dg-final { scan-assembler-not "GOTOFF," } } */ + +static int *data[100]; + +void test (long a, long b) +{ + do + { + if( a < b ) + { + data[a] = data[b]; + a++; + } + } + while (a <= b); +}