| /* { dg-do compile } */ |
| /* { dg-options "-meb isa_rev>=2 -mgp64" } */ |
| /* { dg-skip-if "code quality test" { *-*-* } { "-O0" } { "" } } */ |
| /* { dg-final { scan-assembler-times "\tins\t|\tdins\t" 1 } } */ |
| /* { dg-final { scan-assembler-times "\tsll\t|\tins\t" 1 } } */ |
| |
| /* When inserting something into the top bit of a 32-bit structure, |
| we must make sure that the register remains properly sign-extended. |
| There are two ways of doing this: |
| |
| - use purely 32-bit bit manipulations (a single INS, matched twice here). |
| - use a 64-bit bit manipulation (DINS), and sign-extend the result. We |
| check for this extension using SLL. */ |
| |
| struct s |
| { |
| int a:3; |
| int b:29; |
| }; |
| |
| NOMIPS16 void |
| f (int a) |
| { |
| struct s s; |
| asm volatile ("" : "=r"(s)); |
| s.a = a; |
| asm volatile ("" :: "r"(s)); |
| } |