Re: -fprofile-update=atomic vs. 32-bit architectures

[Sebastian Huber <sebastian.huber@embedded-brains.de>]

On 06.12.22 17:08, Richard Biener wrote:
> Likely.  I'd use the gimple_build () API from gimple-fold.h which
> builds the expression(s) to a gimple_seq creating necessary temporaries
> on-the-fly and then insert that sequence on the edge.

Thanks, I will have a look at this.

I am struggling to convert a uint32_type_node node to a gcov_type_node 
(64-bit). I tried to use this:

       if (result != NULL_TREE)
	{
           tree tmp1 = make_temp_ssa_name (gcov_type_node, NULL, name);
	  gassign *stmt7 = gimple_build_assign (result, VIEW_CONVERT_EXPR, 
build1 (VIEW_CONVERT_EXPR, gcov_type_node,
					   high));
           tree tmp2 = make_temp_ssa_name (gcov_type_node, NULL, name);
	  gassign *stmt8 = gimple_build_assign (tmp2, LSHIFT_EXPR, tmp1, 
build_int_cst (integer_type_node, 32));
	  gassign *stmt9 = gimple_build_assign (result, BIT_IOR_EXPR, tmp2, tmp1);
	  gsi_insert_after (gsi, stmt7, GSI_NEW_STMT);
	  gsi_insert_after (gsi, stmt8, GSI_NEW_STMT);
	  gsi_insert_after (gsi, stmt9, GSI_NEW_STMT);
	}

This ends up in:

../test.c: In function 'f':
../test.c:4:1: error: conversion of register to a different size in 
'view_convert_expr'
     4 | }
       | ^
VIEW_CONVERT_EXPR<long long int>(PROF_time_profiler_15);

PROF_time_profile_9 = VIEW_CONVERT_EXPR<long long 
int>(PROF_time_profiler_15);
during IPA pass: profile
../test.c:4:1: internal compiler error: verify_gimple failed
0xdddc95 verify_gimple_in_cfg(function*, bool, bool)
         /home/EB/sebastian_h/src/gcc/gcc/tree-cfg.cc:5647
0xc20221 execute_function_todo
         /home/EB/sebastian_h/src/gcc/gcc/passes.cc:2091
0xc1efd6 do_per_function
         /home/EB/sebastian_h/src/gcc/gcc/passes.cc:1701
0xc20416 execute_todo
         /home/EB/sebastian_h/src/gcc/gcc/passes.cc:2145
Please submit a full bug report, with preprocessed source (by using 
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.


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