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| author | Ian Lance Taylor <ian@wasabisystems.com> | 2004-12-15 14:03:58 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2004-12-15 14:03:58 +0000 |
| commit | 06d5588c56e70b6f89f3cdab25c381b237759bd7 (patch) | |
| tree | 25904ed54b71b4f304ae2802ea6ecbbb202cc94e /gcc | |
| parent | 9593d79ac2e3b5f48078fe5e9287f28222d23354 (diff) | |
| download | gcc-06d5588c56e70b6f89f3cdab25c381b237759bd7.zip gcc-06d5588c56e70b6f89f3cdab25c381b237759bd7.tar.gz gcc-06d5588c56e70b6f89f3cdab25c381b237759bd7.tar.bz2 | |
arm.c (arm_xscale_rtx_costs): Increase cost of COMPARE of MULT.
* config/arm/arm.c (arm_xscale_rtx_costs): Increase cost of
COMPARE of MULT.
* config/arm/arm.md (mulsi3_compare0): Don't check
arm_arch_xscale.
(mulsi_compare0_scratch, mulsi3_addsi_compare0): Likewise.
(mulsi3addsi_compare0_scratch): Likewise.
From-SVN: r92199
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 9 | ||||
| -rw-r--r-- | gcc/config/arm/arm.c | 9 | ||||
| -rw-r--r-- | gcc/config/arm/arm.md | 8 |
3 files changed, 22 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e1e09b3..0acb9a4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,12 @@ +2004-12-15 Ian Lance Taylor <ian@wasabisystems.com> + + * config/arm/arm.c (arm_xscale_rtx_costs): Increase cost of + COMPARE of MULT. + * config/arm/arm.md (mulsi3_compare0): Don't check + arm_arch_xscale. + (mulsi_compare0_scratch, mulsi3_addsi_compare0): Likewise. + (mulsi3addsi_compare0_scratch): Likewise. + 2004-12-15 Eric Botcazou <ebotcazou@libertysurf.fr> PR other/18665 diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 9db8b79..188ff32 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -4398,6 +4398,15 @@ arm_xscale_rtx_costs (rtx x, int code, int outer_code, int *total) + (REG_OR_SUBREG_REG (XEXP (x, 1)) ? 0 : 4); return true; + case COMPARE: + /* A COMPARE of a MULT is slow on XScale; the muls instruction + will stall until the multiplication is complete. */ + if (GET_CODE (XEXP (x, 0)) == MULT) + *total = 4 + rtx_cost (XEXP (x, 0), code); + else + *total = arm_rtx_costs_1 (x, code, outer_code); + return true; + default: *total = arm_rtx_costs_1 (x, code, outer_code); return true; diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md index f464aa4..3255f05 100644 --- a/gcc/config/arm/arm.md +++ b/gcc/config/arm/arm.md @@ -1097,7 +1097,7 @@ (const_int 0))) (set (match_operand:SI 0 "s_register_operand" "=&r,&r") (mult:SI (match_dup 2) (match_dup 1)))] - "TARGET_ARM && !arm_arch_xscale" + "TARGET_ARM" "mul%?s\\t%0, %2, %1" [(set_attr "conds" "set") (set_attr "insn" "muls")] @@ -1110,7 +1110,7 @@ (match_operand:SI 1 "s_register_operand" "%?r,0")) (const_int 0))) (clobber (match_scratch:SI 0 "=&r,&r"))] - "TARGET_ARM && !arm_arch_xscale" + "TARGET_ARM" "mul%?s\\t%0, %2, %1" [(set_attr "conds" "set") (set_attr "insn" "muls")] @@ -1141,7 +1141,7 @@ (set (match_operand:SI 0 "s_register_operand" "=&r,&r,&r,&r") (plus:SI (mult:SI (match_dup 2) (match_dup 1)) (match_dup 3)))] - "TARGET_ARM && !arm_arch_xscale" + "TARGET_ARM" "mla%?s\\t%0, %2, %1, %3" [(set_attr "conds" "set") (set_attr "insn" "mlas")] @@ -1156,7 +1156,7 @@ (match_operand:SI 3 "s_register_operand" "?r,r,0,0")) (const_int 0))) (clobber (match_scratch:SI 0 "=&r,&r,&r,&r"))] - "TARGET_ARM && !arm_arch_xscale" + "TARGET_ARM" "mla%?s\\t%0, %2, %1, %3" [(set_attr "conds" "set") (set_attr "insn" "mlas")] |