diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/arm/arm.c | 10 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/arm/memcpy-aligned-1.c | 12 |
4 files changed, 31 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 20b87d7..66bfd50 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2015-08-17 Mike Stump <mikestump@comcast.net> + + * config/arm/arm.c (arm_block_move_unaligned_straight): + Emit normal move instead of unaligned load when source or destination + are appropriately aligned. + 2015-08-17 Richard Biener <rguenther@suse.de> Naveen H.S <Naveen.Hurugalawadi@caviumnetworks.com> diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 6e15bf2..8ded494 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -14412,7 +14412,10 @@ arm_block_move_unaligned_straight (rtx dstbase, rtx srcbase, srcoffset + j * UNITS_PER_WORD - src_autoinc); mem = adjust_automodify_address (srcbase, SImode, addr, srcoffset + j * UNITS_PER_WORD); - emit_insn (gen_unaligned_loadsi (regs[j], mem)); + if (src_aligned) + emit_move_insn (regs[j], mem); + else + emit_insn (gen_unaligned_loadsi (regs[j], mem)); } srcoffset += words * UNITS_PER_WORD; } @@ -14431,7 +14434,10 @@ arm_block_move_unaligned_straight (rtx dstbase, rtx srcbase, dstoffset + j * UNITS_PER_WORD - dst_autoinc); mem = adjust_automodify_address (dstbase, SImode, addr, dstoffset + j * UNITS_PER_WORD); - emit_insn (gen_unaligned_storesi (mem, regs[j])); + if (dst_aligned) + emit_move_insn (mem, regs[j]); + else + emit_insn (gen_unaligned_storesi (mem, regs[j])); } dstoffset += words * UNITS_PER_WORD; } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 28a231c..394a42f 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2015-08-17 Mike Stump <mikestump@comcast.net> + Kyrylo Tkachov <kyrylo.tkachov@arm.com> + + * gcc.target/arm/memcpy-aligned-1.c: New test. + 2015-08-16 Francois-Xavier Coudert <fxcoudert@gcc.gnu.org> PR fortran/54656 diff --git a/gcc/testsuite/gcc.target/arm/memcpy-aligned-1.c b/gcc/testsuite/gcc.target/arm/memcpy-aligned-1.c new file mode 100644 index 0000000..852b391 --- /dev/null +++ b/gcc/testsuite/gcc.target/arm/memcpy-aligned-1.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -save-temps" } */ + +void *memcpy (void *dest, const void *src, unsigned int n); + +void foo (char *dst, int i) +{ + memcpy (dst, &i, sizeof (i)); +} + +/* { dg-final { scan-assembler-times "str\t" 1 } } */ +/* { dg-final { scan-assembler-not "ldr\t" } } */ |