[PING] [PATCH v2] testsuite: Verify r0-r3 are extended with CMSE

[Torbjorn SVENSSON <torbjorn.svensson@foss.st.com>]

Hi,

I'm not sure if the previous "ok" from Richard on the v1 is enough for 
this or if there needs another approval.

Adding extra maintainers since Richard Earnshaw appears to be busy the 
past weeks.

Kind regards,
Torbjörn

On 2024-05-06 13:50, Torbjorn SVENSSON wrote:
> Hi,
> 
> Forgot to mention when I sent the patch that I would like to commit it 
> to the following branches:
> 
> - releases/gcc-11
> - releases/gcc-12
> - releases/gcc-13
> - releases/gcc-14
> - trunk
> 
> Kind regards,
> Torbjörn
> 
> On 2024-05-02 12:50, Torbjörn SVENSSON wrote:
>> Add regression test to the existing zero/sign extend tests for CMSE to
>> verify that r0, r1, r2 and r3 are properly extended, not just r0.
>>
>> boolCharShortEnumSecureFunc test is done using -O0 to ensure the
>> instructions are in a predictable order.
>>
>> gcc/testsuite/ChangeLog:
>>
>>     * gcc.target/arm/cmse/extend-param.c: Add regression test. Add
>>       -fshort-enums.
>>     * gcc.target/arm/cmse/extend-return.c: Add -fshort-enums option.
>>
>> Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
>> ---
>>   .../gcc.target/arm/cmse/extend-param.c        | 21 +++++++++++++++----
>>   .../gcc.target/arm/cmse/extend-return.c       |  4 ++--
>>   2 files changed, 19 insertions(+), 6 deletions(-)
>>
>> diff --git a/gcc/testsuite/gcc.target/arm/cmse/extend-param.c 
>> b/gcc/testsuite/gcc.target/arm/cmse/extend-param.c
>> index 01fac786238..d01ef87e0be 100644
>> --- a/gcc/testsuite/gcc.target/arm/cmse/extend-param.c
>> +++ b/gcc/testsuite/gcc.target/arm/cmse/extend-param.c
>> @@ -1,5 +1,5 @@
>>   /* { dg-do compile } */
>> -/* { dg-options "-mcmse" } */
>> +/* { dg-options "-mcmse -fshort-enums" } */
>>   /* { dg-final { check-function-bodies "**" "" "" } } */
>>   #include <arm_cmse.h>
>> @@ -78,7 +78,6 @@ __attribute__((cmse_nonsecure_entry)) char 
>> enumSecureFunc (enum offset index) {
>>     if (index >= ARRAY_SIZE)
>>       return 0;
>>     return array[index];
>> -
>>   }
>>   /*
>> @@ -88,9 +87,23 @@ __attribute__((cmse_nonsecure_entry)) char 
>> enumSecureFunc (enum offset index) {
>>   **    ...
>>   */
>>   __attribute__((cmse_nonsecure_entry)) char boolSecureFunc (bool 
>> index) {
>> -
>>     if (index >= ARRAY_SIZE)
>>       return 0;
>>     return array[index];
>> +}
>> -}
>> \ No newline at end of file
>> +/*
>> +**__acle_se_boolCharShortEnumSecureFunc:
>> +**    ...
>> +**    uxtb    r0, r0
>> +**    uxtb    r1, r1
>> +**    uxth    r2, r2
>> +**    uxtb    r3, r3
>> +**    ...
>> +*/
>> +__attribute__((cmse_nonsecure_entry,optimize(0))) char 
>> boolCharShortEnumSecureFunc (bool a, unsigned char b, unsigned short 
>> c, enum offset d) {
>> +  size_t index = a + b + c + d;
>> +  if (index >= ARRAY_SIZE)
>> +    return 0;
>> +  return array[index];
>> +}
>> diff --git a/gcc/testsuite/gcc.target/arm/cmse/extend-return.c 
>> b/gcc/testsuite/gcc.target/arm/cmse/extend-return.c
>> index cf731ed33df..081de0d699f 100644
>> --- a/gcc/testsuite/gcc.target/arm/cmse/extend-return.c
>> +++ b/gcc/testsuite/gcc.target/arm/cmse/extend-return.c
>> @@ -1,5 +1,5 @@
>>   /* { dg-do compile } */
>> -/* { dg-options "-mcmse" } */
>> +/* { dg-options "-mcmse -fshort-enums" } */
>>   /* { dg-final { check-function-bodies "**" "" "" } } */
>>   #include <arm_cmse.h>
>> @@ -89,4 +89,4 @@ unsigned char __attribute__((noipa)) enumNonsecure0 
>> (ns_enum_foo_t * ns_foo_p)
>>   unsigned char boolNonsecure0 (ns_bool_foo_t * ns_foo_p)
>>   {
>>     return ns_foo_p ();
>> -}
>> \ No newline at end of file
>> +}