diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/i386/i386.md | 27 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/insvti_highpart-1.c | 12 |
2 files changed, 38 insertions, 1 deletions
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index cf90867..5a064f3 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -3479,6 +3479,32 @@ "mov{b}\t{%h1, %h0|%h0, %h1}" [(set_attr "type" "imov") (set_attr "mode" "QI")]) + +(define_code_iterator any_or_plus [plus ior xor]) + +(define_insn_and_split "*insvti_highpart_1" + [(set (match_operand:TI 0 "nonimmediate_operand" "=ro,r,r,&r") + (any_or_plus:TI + (and:TI + (match_operand:TI 1 "nonimmediate_operand" "r,m,r,m") + (match_operand:TI 3 "const_scalar_int_operand" "n,n,n,n")) + (ashift:TI + (zero_extend:TI + (match_operand:DI 2 "nonimmediate_operand" "r,r,m,m")) + (const_int 64))))] + "TARGET_64BIT + && CONST_WIDE_INT_P (operands[3]) + && CONST_WIDE_INT_NUNITS (operands[3]) == 2 + && CONST_WIDE_INT_ELT (operands[3], 0) == -1 + && CONST_WIDE_INT_ELT (operands[3], 1) == 0" + "#" + "&& reload_completed" + [(const_int 0)] +{ + operands[4] = gen_lowpart (DImode, operands[1]); + split_double_concat (TImode, operands[0], operands[4], operands[2]); + DONE; +}) ;; Floating point push instructions. @@ -11573,7 +11599,6 @@ (set_attr "mode" "QI")]) ;; Split DST = (HI<<32)|LO early to minimize register usage. -(define_code_iterator any_or_plus [plus ior xor]) (define_insn_and_split "*concat<mode><dwi>3_1" [(set (match_operand:<DWI> 0 "nonimmediate_operand" "=ro,r") (any_or_plus:<DWI> diff --git a/gcc/testsuite/gcc.target/i386/insvti_highpart-1.c b/gcc/testsuite/gcc.target/i386/insvti_highpart-1.c new file mode 100644 index 0000000..4ae9ccf --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/insvti_highpart-1.c @@ -0,0 +1,12 @@ +/* { dg-do compile { target int128 } } */ +/* { dg-options "-O2" } */ + +__int128 foo(__int128 x, unsigned long long y) +{ + __int128 t = (__int128)y << 64; + __int128 r = (x & ~0ull) | t; + return r; +} + +/* { dg-final { scan-assembler-not "xorl" } } */ +/* { dg-final { scan-assembler-not "orq" } } */ |