Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/max-1.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
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/* PR middle-end/18548 */ /* Test case reduced by Andrew Pinski <pinskia@physics.uc.edu> */ /* { dg-do run } */ /* { dg-options "-O1 " } */ /* Option -fno-tree-lrs removed By Andrew MacLeod since it is no longer supported in the compiler beginning with GCC 4.3. */ /* m32c has varying sized pointers */ /* { dg-skip-if "" { "m32c-*-*" } { "*" } { "-mcpu=m32c" "-mcpu=m32cm" } } */ __extension__ typedef __INTPTR_TYPE__ intptr_t; extern void abort (void); intptr_t fff[10]; void f(intptr_t a, intptr_t b) { intptr_t crcc = b; intptr_t d = *((intptr_t*)(a+1)); int i; a = d >= b? d:b; for(i=0;i<10;i++) fff[i] = a; } /* The variable a cannot be a local variable as we get better aliasing now and decide that the store to a is dead. The better aliasing comes from better representation of pointer arithmetic. */ intptr_t a = 10; int main(void) { int i; f((intptr_t)(&a)-1,0); for(i = 0;i<10;i++) if (fff[i]!=10) abort (); return 0; }