diff --git a/gcc/config/i386/i386.cc b/gcc/config/i386/i386.cc index 477e6ce..9557bff 100644 --- a/gcc/config/i386/i386.cc +++ b/gcc/config/i386/i386.cc @@ -15543,6 +15543,13 @@ ix86_avoid_lea_for_addr (rtx_insn *insn, rtx operands[]) && (regno0 == regno1 || regno0 == regno2)) return true; + /* Split with -Oz if the encoding requires fewer bytes. */ + if (optimize_size > 1 + && parts.scale > 1 + && !parts.base + && (!parts.disp || parts.disp == const0_rtx)) + return true; + /* Check we need to optimize. */ if (!TARGET_AVOID_LEA_FOR_ADDR || optimize_function_for_size_p (cfun)) return false; diff --git a/gcc/testsuite/gcc.target/i386/lea-2.c b/gcc/testsuite/gcc.target/i386/lea-2.c new file mode 100644 index 0000000..20aded8 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/lea-2.c @@ -0,0 +1,7 @@ +/* { dg-do compile { target { ! ia32 } } } */ +/* { dg-options "-Oz" } */ +int foo(int x) { return x<<2; } +int bar(int x) { return x<<3; } +long long fool(long long x) { return x<<2; } +long long barl(long long x) { return x<<3; } +/* { dg-final { scan-assembler-not "lea\[lq\]" } } */