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The test fails for avr because fn1 does not get inlined into fn2. Inlining occurs for x86_64 because fn1's computed size equals call_stmt_size. For the avr, 32 bit memory moves are more expensive, and b[3] = p10[a] results in a bigger size for fn1, preventing the inlining. Add -finline-small-functions to force early inliner to inline fn1. gcc/testsuite/ 2016-11-23 Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com> * gcc.dg/uninit-19.c: Add -finline-small-functions for avr. From-SVN: r242742
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