diff options
Diffstat (limited to 'toolchain/gcc/patches/3.4.5/601-gcc34-arm-ldm-peephole2.patch')
| -rw-r--r-- | toolchain/gcc/patches/3.4.5/601-gcc34-arm-ldm-peephole2.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/toolchain/gcc/patches/3.4.5/601-gcc34-arm-ldm-peephole2.patch b/toolchain/gcc/patches/3.4.5/601-gcc34-arm-ldm-peephole2.patch new file mode 100644 index 0000000000..27f7c07db9 --- /dev/null +++ b/toolchain/gcc/patches/3.4.5/601-gcc34-arm-ldm-peephole2.patch @@ -0,0 +1,42 @@ +The 30_all_gcc34-arm-ldm-peephole.patch from Debian was conflicting +with the newer 36_all_pr16201-fix.patch, so i cut out the hunk from +it that was causing problems and grabbed an updated version from +upstream cvs. + +Index: gcc/config/arm/arm.c +=================================================================== +RCS file: /cvsroot/gcc/gcc/gcc/config/arm/arm.c,v +retrieving revision 1.432 +retrieving revision 1.433 +diff -u -r1.432 -r1.433 +--- gcc-3.4.4/gcc/config/arm/arm.c 29 Mar 2005 03:00:23 -0000 1.432 ++++ gcc-3.4.4/gcc/config/arm/arm.c 1 Apr 2005 11:02:22 -0000 1.433 +@@ -5139,6 +5139,10 @@ + int + adjacent_mem_locations (rtx a, rtx b) + { ++ /* We don't guarantee to preserve the order of these memory refs. */ ++ if (volatile_refs_p (a) || volatile_refs_p (b)) ++ return 0; ++ + if ((GET_CODE (XEXP (a, 0)) == REG + || (GET_CODE (XEXP (a, 0)) == PLUS + && GET_CODE (XEXP (XEXP (a, 0), 1)) == CONST_INT)) +@@ -5178,6 +5182,17 @@ + return 0; + + val_diff = val1 - val0; ++ ++ if (arm_ld_sched) ++ { ++ /* If the target has load delay slots, then there's no benefit ++ to using an ldm instruction unless the offset is zero and ++ we are optimizing for size. */ ++ return (optimize_size && (REGNO (reg0) == REGNO (reg1)) ++ && (val0 == 0 || val1 == 0 || val0 == 4 || val1 == 4) ++ && (val_diff == 4 || val_diff == -4)); ++ } ++ + return ((REGNO (reg0) == REGNO (reg1)) + && (val_diff == 4 || val_diff == -4)); + } |