История изменений

run-pass/issue-40883.rs ... FAILED

// check that we don't have linear stack usage with multiple calls to `push`
// min-llvm-version 4.0

$ ls /var/log/packages/llvm*
/var/log/packages/llvm-4.0.0-x86_64-1

run-pass/issue-40883.rs ... FAILED

// check that we don't have linear stack usage with multiple calls to `push`
// min-llvm-version 4.0

$ ls /var/log/packages/llvm*
/var/log/packages/llvm-4.0.0-x86_64-1

Expected Result

Function should use a small amount of stack space, definitely less than 2 kilobytes (Big is 512 bytes per copy); 1.12.0 with -Z orbit=off uses 1088 bytes of stack.
Actual Result

When compiled, the function uses more than 16384 = 8*64*16*2 bytes of stack space, as is evident from subq $16384, %rsp in the assembly - 2 copies of Big for every call to push.

run-pass/issue-40883.rs ... FAILED

// check that we don't have linear stack usage with multiple calls to `push`
// min-llvm-version 4.0

$ ls /var/log/packages/llvm*
/var/log/packages/llvm-4.0.0-x86_64-1

run-pass/issue-40883.rs ... FAILED

// check that we don't have linear stack usage with multiple calls to `push`
// min-llvm-version 4.0

$ ls /var/log/packages/llvm*
/var/log/packages/llvm-4.0.0-x86_64-1