| /* { dg-do compile } */ |
| /* { dg-options "-O -fno-tree-sra -fdump-tree-fre1-details -fdump-tree-optimized" } */ |
| #if (__SIZEOF_INT__ == __SIZEOF_FLOAT__) |
| typedef int intflt; |
| #elif (__SIZEOF_LONG__ == __SIZEOF_FLOAT__) |
| typedef long intflt; |
| #else |
| #error Add target support here for type that will union float size |
| #endif |
| |
| struct X { |
| int i; |
| union { |
| intflt j; |
| intflt k; |
| float f; |
| } u; |
| }; |
| |
| intflt foo(intflt j) |
| { |
| struct X a; |
| |
| a.u.j = j; |
| a.u.f = a.u.f; |
| a.u.f = a.u.f; |
| a.u.j = a.u.j; |
| a.u.f = a.u.f; |
| return a.u.k; |
| } |
| |
| /* { dg-final { scan-tree-dump-times "Inserted" 1 "fre1" } } */ |
| /* { dg-final { scan-tree-dump-times "Replaced a.u.f with" 3 "fre1" } } */ |
| /* { dg-final { scan-tree-dump-times "Replaced a.u.k with j" 1 "fre1" } } */ |
| /* { dg-final { scan-tree-dump "= VIEW_CONVERT_EXPR<float>\\\(j_" "fre1" } } */ |
| /* { dg-final { scan-tree-dump "return j" "optimized" } } */ |
