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commit fceb8950b4dfc775fcf46d4eecf7b9884ef67cbf Author: H.J. Lu hjl.tools@gmail.com Date: Thu Jul 9 18:42:45 2015 -0700
Turn off X86_TUNE_ZERO_EXTEND_WITH_AND for IA MCU --- gcc/config/i386/x86-tune.def | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/config/i386/x86-tune.def b/gcc/config/i386/x86-tune.def index 42a560b..eb271b8 100644 --- a/gcc/config/i386/x86-tune.def +++ b/gcc/config/i386/x86-tune.def @@ -448,7 +448,7 @@ DEF_TUNE (X86_TUNE_SHIFT1, "shift1", ~m_486) /* X86_TUNE_ZERO_EXTEND_WITH_AND: Use AND instruction instead of mozbl/movwl. */ DEF_TUNE (X86_TUNE_ZERO_EXTEND_WITH_AND, "zero_extend_with_and", - m_486 | m_PENT | m_IAMCU) + m_486 | m_PENT)
/* X86_TUNE_PROMOTE_HIMODE_IMUL: Modern CPUs have same latency for HImode and SImode multiply, but 386 and 486 do HImode multiply faster. */