diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/arm/arm.c | 9 |
2 files changed, 13 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a150420..79562ba 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2003-02-16 Richard Earnshaw <rearnsha@arm.com> + + * arm.c (arm_reload_in_hi): Ensure that the scratch register does + not overlap the final result register. + 2003-02-16 Arend Bayer <arend.bayer@web.de> Richard Henderson <rth@redhat.com> diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 2d4f4d8..0847c97 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -5845,7 +5845,14 @@ arm_reload_in_hi (operands) } } - scratch = gen_rtx_REG (SImode, REGNO (operands[2])); + /* Operands[2] may overlap operands[0] (though it won't overlap + operands[1]), that's why we asked for a DImode reg -- so we can + use the bit that does not overlap. */ + if (REGNO (operands[2]) == REGNO (operands[0])) + scratch = gen_rtx_REG (SImode, REGNO (operands[2]) + 1); + else + scratch = gen_rtx_REG (SImode, REGNO (operands[2])); + emit_insn (gen_zero_extendqisi2 (scratch, gen_rtx_MEM (QImode, plus_constant (base, |