From 5e922d66a7351e37cda6a0e2c587e6844ea6d0c9 Mon Sep 17 00:00:00 2001 From: Adam Nemet Date: Thu, 26 Jan 2006 10:16:13 +0000 Subject: [PATCH] * config/mips/mips.md (*clear_upper32): New combiner pattern. From-SVN: r110250 --- gcc/ChangeLog | 4 ++++ gcc/config/mips/mips.md | 25 +++++++++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c83587caac1..1dbc7e87ac2 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2006-01-26 Adam Nemet + + * config/mips/mips.md (*clear_upper32): New combiner pattern. + 2006-01-26 Richard Earnshaw * arm.md (smaxsi3, sminsi3): Convert to define_expand. diff --git a/gcc/config/mips/mips.md b/gcc/config/mips/mips.md index b0ceff8dbe3..af8f709b53f 100644 --- a/gcc/config/mips/mips.md +++ b/gcc/config/mips/mips.md @@ -2332,6 +2332,31 @@ (set_attr "mode" "DI") (set_attr "length" "8,*")]) +;; Combine is not allowed to convert this insn into a zero_extendsidi2 +;; because of TRULY_NOOP_TRUNCATION. + +(define_insn_and_split "*clear_upper32" + [(set (match_operand:DI 0 "register_operand" "=d,d") + (and:DI (match_operand:DI 1 "nonimmediate_operand" "d,o") + (const_int 4294967295)))] + "TARGET_64BIT" +{ + if (which_alternative == 0) + return "#"; + + operands[1] = gen_lowpart (SImode, operands[1]); + return "lwu\t%0,%1"; +} + "&& reload_completed && REG_P (operands[1])" + [(set (match_dup 0) + (ashift:DI (match_dup 1) (const_int 32))) + (set (match_dup 0) + (lshiftrt:DI (match_dup 0) (const_int 32)))] + "" + [(set_attr "type" "multi,load") + (set_attr "mode" "DI") + (set_attr "length" "8,*")]) + (define_expand "zero_extend2" [(set (match_operand:GPR 0 "register_operand") (zero_extend:GPR (match_operand:SHORT 1 "nonimmediate_operand")))]