r180874 - [inline asm] Add a test case for r180873. Test case needs to be on the clang

[Eric Christopher]

Wait, are you depending upon an error from the backend for this? If
so, what's causing us to be unable to check it from a .ll file?

-eric

On Wed, May 1, 2013 at 12:50 PM, Chad Rosier <mcrosier at apple.com> wrote:
> Author: mcrosier
> Date: Wed May  1 14:50:45 2013
> New Revision: 180874
>
> URL: http://llvm.org/viewvc/llvm-project?rev=180874&view=rev
> Log:
> [inline asm] Add a test case for r180873. Test case needs to be on the clang
> side because we need an inline asm diagnostics handler in place.  Unfortunately,
> we emit a .s file because we need to build the SelectionDAG to hit the backend
> issue.
> rdar://13446483
>
>
> Added:
>     cfe/trunk/test/CodeGen/arm-asm-diag.c
>
> Added: cfe/trunk/test/CodeGen/arm-asm-diag.c
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/arm-asm-diag.c?rev=180874&view=auto
> ==============================================================================
> --- cfe/trunk/test/CodeGen/arm-asm-diag.c (added)
> +++ cfe/trunk/test/CodeGen/arm-asm-diag.c Wed May  1 14:50:45 2013
> @@ -0,0 +1,23 @@
> +// REQUIRES: arm-registered-target
> +// RUN: %clang_cc1 -triple armv7 %s -S -o /dev/null 2>&1 | Filecheck %s
> +
> +// rdar://13446483
> +typedef __attribute__((neon_vector_type(2))) long long int64x2_t;
> +typedef struct int64x2x4_t {
> +  int64x2_t val[4];
> +} int64x2x4_t;
> +int64x2x4_t t1(const long long a[]) {
> +  int64x2x4_t r;
> +  __asm__("vldm %[a], { %q[r0], %q[r1], %q[r2], %q[r3] }"
> +          : [r0] "=r"(r.val[0]), // expected-warning {{the value is truncated when put into register, use a modifier to specify the size}}
> +            [r1] "=r"(r.val[1]), // expected-warning {{the value is truncated when put into register, use a modifier to specify the size}}
> +            [r2] "=r"(r.val[2]), // expected-warning {{the value is truncated when put into register, use a modifier to specify the size}}
> +            [r3] "=r"(r.val[3])  // expected-warning {{the value is truncated when put into register, use a modifier to specify the size}}
> +          : [a] "r"(a));
> +  return r;
> +}
> +// We should see all four errors, rather than report a fatal error after the first.
> +// CHECK: error: non-trivial scalar-to-vector conversion, possible invalid constraint for vector type
> +// CHECK: error: non-trivial scalar-to-vector conversion, possible invalid constraint for vector type
> +// CHECK: error: non-trivial scalar-to-vector conversion, possible invalid constraint for vector type
> +// CHECK: error: non-trivial scalar-to-vector conversion, possible invalid constraint for vector type
>
>
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