diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/i386/i386.c | 2 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr67329.c | 20 |
4 files changed, 31 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 33c91dc..1bac366 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2015-08-24 H.J. Lu <hongjiu.lu@intel.com> + + PR target/67329 + * config/i386/i386.c (iamcu_cost): Set MOVE_RATIO cost to 9. + 2015-08-24 Renlin Li <renlin.li@arm.com> * config/arm/arm-protos.h (arm_valid_symbolic_address_p): Declare. diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 05fa5e1..070605f 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -436,7 +436,7 @@ struct processor_costs iamcu_cost = { COSTS_N_INSNS (3), /* cost of movsx */ COSTS_N_INSNS (2), /* cost of movzx */ 8, /* "large" insn */ - 6, /* MOVE_RATIO */ + 9, /* MOVE_RATIO */ 6, /* cost for loading QImode using movzbl */ {2, 4, 2}, /* cost of loading integer registers in QImode, HImode and SImode. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 77c8c23..9161ce4 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2015-08-24 H.J. Lu <hongjiu.lu@intel.com> + + PR target/67329 + * gcc.target/i386/pr67329.c: New test. + 2015-08-24 Nathan Sidwell <nathan@acm.org> * gcc/testsuite/gcc.dg/pr49551.c: Needs -fdata-sections. diff --git a/gcc/testsuite/gcc.target/i386/pr67329.c b/gcc/testsuite/gcc.target/i386/pr67329.c new file mode 100644 index 0000000..a29dd5b --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr67329.c @@ -0,0 +1,20 @@ +/* { dg-do compile { target ia32 } } */ +/* { dg-options "-O3 -fno-tree-fre -fno-tree-pre -fdump-tree-optimized -mtune=iamcu" } */ + +int +foo () +{ + const int a[8] = { 0, 1, 2, 3, 4, 5, 6, 7 }; + int i, sum; + + sum = 0; + for (i = 0; i < sizeof (a) / sizeof (*a); i++) + sum += a[i]; + + return sum; +} + +/* After late unrolling the above loop completely DOM should be + able to optimize this to return 28. */ + +/* { dg-final { scan-tree-dump "return 28;" "optimized" } } */ |