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[/] [openrisc/] [tags/] [gnu-dev/] [fsf-gcc-snapshot-1-mar-12/] [or1k-gcc/] [gcc/] [testsuite/] [gcc.target/] [mips/] [ins-2.c] - Rev 847
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/* { dg-do compile } */ /* { dg-options "-O -meb isa_rev>=2 -mgp64" } */ /* { 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)); }
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