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i386.c (ix86_avoid_lea_for_addr): Return false for SImode_address_operand operands, having only a REG argument.

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* config/i386/i386.c (ix86_avoid_lea_for_addr): Return false
	for SImode_address_operand operands, having only a REG argument.

From-SVN: r206847
This commit is contained in:
Uros Bizjak 2014-01-20 18:59:14 +01:00 committed by Uros Bizjak
parent ef132d593e
commit 3e7291458b
3 changed files with 12 additions and 8 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2014-01-20 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.c (ix86_avoid_lea_for_addr): Return false
for SImode_address_operand operands, having only a REG argument.
2014-01-20 Marcus Shawcroft <marcus.shawcroft@arm.com> 2014-01-20 Marcus Shawcroft <marcus.shawcroft@arm.com>
* config/aarch64/aarch64-linux.h (GLIBC_DYNAMIC_LINKER): Expand * config/aarch64/aarch64-linux.h (GLIBC_DYNAMIC_LINKER): Expand

13
gcc/config/i386/i386.c
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@ -18160,17 +18160,16 @@ ix86_avoid_lea_for_addr (rtx insn, rtx operands[])
return false; return false;
/* The "at least two components" test below might not catch simple /* The "at least two components" test below might not catch simple
*mov[sd]i_internal or *zero_extendsidi2 insns if parts.base is move or zero extension insns if parts.base is non-NULL and parts.disp
non-NULL and parts.disp is const0_rtx as the only components in is const0_rtx as the only components in the address, e.g. if the
the address, e.g. if the register is %rbp or %r13. As this register is %rbp or %r13. As this test is much cheaper and moves or
test is much cheaper and moves or zero extensions are the common zero extensions are the common case, do this check first. */
case, do this check first. */
if (REG_P (operands[1]) if (REG_P (operands[1])
|| (GET_CODE (operands[1]) == ZERO_EXTEND || (SImode_address_operand (operands[1], VOIDmode)
&& REG_P (XEXP (operands[1], 0)))) && REG_P (XEXP (operands[1], 0))))
return false; return false;
/* Check it is correct to split here. */ /* Check if it is OK to split here. */
if (!ix86_ok_to_clobber_flags (insn)) if (!ix86_ok_to_clobber_flags (insn))
return false; return false;

2
gcc/config/i386/i386.md
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@ -5437,7 +5437,7 @@
/* Zero-extend return register to DImode for zero-extended addresses. */ /* Zero-extend return register to DImode for zero-extended addresses. */
if (mode != <MODE>mode) if (mode != <MODE>mode)
emit_insn (gen_zero_extendsidi2 emit_insn (gen_zero_extendsidi2
(operands[0], gen_lowpart ((mode), operands[0]))); (operands[0], gen_lowpart (mode, operands[0])));
DONE; DONE;
} }