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| author | Uros Bizjak <uros@gcc.gnu.org> | 2017-09-19 20:38:10 +0200 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2017-09-19 20:38:10 +0200 |
| commit | 684ccf0e119368fb8eba11bfce9d2724bcfaef9f (patch) | |
| tree | 4b86c3db7097fa641cc443d43221641d25fa117b | |
| parent | 23b49089a4f20c24535c964d1b0eba0995dff6c8 (diff) | |
| download | gcc-684ccf0e119368fb8eba11bfce9d2724bcfaef9f.zip gcc-684ccf0e119368fb8eba11bfce9d2724bcfaef9f.tar.gz gcc-684ccf0e119368fb8eba11bfce9d2724bcfaef9f.tar.bz2 | |
i386.c (ix86_split_long_move): Do not handle address used for LEA in a special way.
* config/i386/i386.c (ix86_split_long_move): Do not handle
address used for LEA in a special way.
From-SVN: r252984
| -rw-r--r-- | gcc/ChangeLog | 9 | ||||
| -rw-r--r-- | gcc/config/i386/i386.c | 37 |
2 files changed, 10 insertions, 36 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ec3616d..35a3602 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,8 +1,13 @@ -2017-09-17 Segher Boessenkool <segher@kernel.crashing.org> +2017-09-19 Uros Bizjak <ubizjak@gmail.com> + + * config/i386/i386.c (ix86_split_long_move): Do not handle + address used for LEA in a special way. + +2017-09-19 Segher Boessenkool <segher@kernel.crashing.org> * simplify-rtx.c (simplify_binary_operation_1): Fix typo in comment. -2017-09-18 Martin Sebor <msebor@redhat.com> +2017-09-19 Martin Sebor <msebor@redhat.com> PR c/81854 * cgraphunit.c (handle_alias_pairs): Reject aliases between functions diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index c80c0de..1c765fb 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -26706,7 +26706,7 @@ ix86_split_long_move (rtx operands[]) Do an lea to the last part and use only one colliding move. */ else if (collisions > 1) { - rtx base, addr, tls_base = NULL_RTX; + rtx base, addr; collisions = 1; @@ -26723,44 +26723,13 @@ ix86_split_long_move (rtx operands[]) struct ix86_address parts; int ok = ix86_decompose_address (addr, &parts); gcc_assert (ok); - if (parts.seg == DEFAULT_TLS_SEG_REG) - { - /* It is not valid to use %gs: or %fs: in - lea though, so we need to remove it from the - address used for lea and add it to each individual - memory loads instead. */ - addr = copy_rtx (addr); - rtx *x = &addr; - while (GET_CODE (*x) == PLUS) - { - for (i = 0; i < 2; i++) - { - rtx u = XEXP (*x, i); - if (GET_CODE (u) == ZERO_EXTEND) - u = XEXP (u, 0); - if (GET_CODE (u) == UNSPEC - && XINT (u, 1) == UNSPEC_TP) - { - tls_base = XEXP (*x, i); - *x = XEXP (*x, 1 - i); - break; - } - } - if (tls_base) - break; - x = &XEXP (*x, 0); - } - gcc_assert (tls_base); - } + /* It is not valid to use %gs: or %fs: in lea. */ + gcc_assert (parts.seg == ADDR_SPACE_GENERIC); } emit_insn (gen_rtx_SET (base, addr)); - if (tls_base) - base = gen_rtx_PLUS (GET_MODE (base), base, tls_base); part[1][0] = replace_equiv_address (part[1][0], base); for (i = 1; i < nparts; i++) { - if (tls_base) - base = copy_rtx (base); tmp = plus_constant (Pmode, base, UNITS_PER_WORD * i); part[1][i] = replace_equiv_address (part[1][i], tmp); } |