Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/hoist-register-pressure-1.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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/* { dg-options "-Os -fdump-rtl-hoist -fno-code-hoisting" } */ /* The rtl hoist pass requires that the expression to be hoisted can be assigned without clobbering cc. For a PLUS rtx on S/390 this requires a load address instruction which is fine on 64 bit but cannot be used on 31 bit since it does a 31 bit add only. */ /* { dg-final { scan-rtl-dump "PRE/HOIST: end of bb .* copying expression" "hoist" { target { { !s390*-*-* || lp64 } && nonpic } } } } */ #define BUF 100 long a[BUF]; void com (long); void bar (long); long foo (long x, long y, long z) { /* "x+y" won't be hoisted if "-fira-hoist-pressure" is disabled, because its rtx_cost is too small. */ if (z) { a[1] = a[0] + a[2]; a[2] = a[1] + a[3]; a[3] = a[2] + a[4]; a[4] = a[3] + a[5]; a[5] = a[4] + a[6]; a[6] = a[5] + a[7]; a[7] = a[6] + a[8]; com (x+y); } else { bar (x+y); } return 0; }