Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/20111227-3.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
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/* Testcase derived from 20111227-1.c to ensure that REE is combining redundant sign extends with sign extend to wider mode. */ /* { dg-do compile { target i?86-*-* x86_64-*-* } } */ /* { dg-options "-fdump-rtl-ree -O -free" } */ extern void abort (void); signed short s; signed int i; signed long l; signed char v = -1; void __attribute__((noinline,noclone)) bar (int t) { if (t == 2 && s != -1) abort (); if (t == 1 && i != -1) abort (); if (t == 0 && l != -1) abort (); } void __attribute__((noinline,noclone)) foo (signed char *a, int t) { signed char r = v; if (t == 2) s = (signed short) r; else if (t == 1) i = (signed int) r; else if (t == 0) l = (signed long) r; bar (t); } int main(void) { foo (&v, 0); foo (&v, 1); foo (&v, 2); return 0; } /* { dg-final { scan-rtl-dump "Elimination opportunities = 3 realized = 3" "ree" } } */