Bug 89889 - worse code compared to clang with alloca()

Hi, As per our analysis on the issue, I have some queries as per below: Is there any target hooks for alloca? Should we do the same like __builtin_alloca_with_align (array allocation) or we assume the problem as a target based (prologue/epilogue optimization) issue? -- Thanks Lokesh

Re: Bug 84762 - GCC for PowerPC32 violates the SysV ABI spec for small struct returns

Thank you Sirl, >>-msvr4-struct-return=standard and -msvr4-struct-return=gnu (which would be the default (-msvr4-struct-return=standard) by default, you mean using registers to return? Lokesh On Fri, Nov 30, 2018 at 4:18 PM Franz Sirl wrote: > > Am 2018-11-26 um 06:13 schrieb Lo

Re: Bug 84762 - GCC for PowerPC32 violates the SysV ABI spec for small struct returns

Hi Sirl, As you mentioned in Bugzilla (comment 13), aix_return ( return in memory) svr4_return (return in register) what is the semantics of svr4gnu w.r.t. return. On Mon, Nov 19, 2018 at 11:33 PM Franz Sirl wrote: > > Am 2018-11-19 um 15:36 schrieb Lokesh Janghel: > > Hi Segher,

Re: Bug 84762 - GCC for PowerPC32 violates the SysV ABI spec for small struct returns

Hi Sirl, As you mentioned in Bugzilla (comment 13), aix_return ( return in memory) svr4_return (return in register) what is the semantics of svr4gnu w.r.t. return. Thanks Lokesh

Re: Bug 84762 - GCC for PowerPC32 violates the SysV ABI spec for small struct returns

roduce this issue. > > Hi, > > you already reproduced the issue, according to the ABI, the code should > look like: > > .LFB0: > stwu 1,-32(1) > .LCFI0: > lis 3,0x1122 > ori 3,3,0x3300 > addi 1,1,32 > .LCFI1: > blr > > So the value being passed around should be left-aligned in the register. > > > Sirl, > > If you got the patch for this issue or will look into the issue. > > I have an unfinished patch, it misses commandline handling, testcases > and some code comments. I've attached it. > > It's unlikely I can continue to work on it anytime soon :-(. > > Franz > -- Thanks & Regards Lokesh Janghel +91-9752984749

Re: Bug 84762 - GCC for PowerPC32 violates the SysV ABI spec for small struct returns

Hi Sirl, As you mention in Bugzilla (comment 13), aix_return( return in memory) svr4_return(in registers) what is the semantics of *svr4gnu* w.r.t return . On Mon, Nov 19, 2018 at 11:33 PM Franz Sirl < franz.sirl-ker...@lauterbach.com> wrote: > Am 2018-11-19 um 15:36 schrieb Lokes

Re: Bug 84762 - GCC for PowerPC32 violates the SysV ABI spec for small struct returns

. -- Thanks & Regards Lokesh Janghel

Re: Bug 85667 - (x86_64) ms_abi rules aren't followed when returning short structs with float values

register (like clang )or memory to return not the SSE registers. Before we go ahead and fix this issue and we would like to know the community views/comments on the same. -- Thanks & Regards Lokesh Janghel