git bisect start
# status: waiting for both good and bad commits
# good: [f7cde200320e0800e4fcc5cea399e9faef50f8d4] libstdc++: Cascade wall-time saves in lazy expansion seeding [PR124853]
git bisect good f7cde200320e0800e4fcc5cea399e9faef50f8d4
# status: waiting for bad commit, 1 good commit known
# bad: [0748d2c83fc0440f101fe01cc3dfc97c8e11c3b2] RISC-V: Declare TLSDESC clobbers for vector registers and CSRs per psABI
git bisect bad 0748d2c83fc0440f101fe01cc3dfc97c8e11c3b2
# bad: [649b2a6d9f9f1a29f7f26199b7b3ebbaeef3c634] [PR rtl-optimization/126136] Fix dest = cond ? x : -1 when STORE_FLAG_VALUE is -1
git bisect bad 649b2a6d9f9f1a29f7f26199b7b3ebbaeef3c634
# bad: [97d9016b230cca98a2d5fa1baa8af59bf96357df] aarch64: Fix tls debuginfo missing location info [PR97344]
git bisect bad 97d9016b230cca98a2d5fa1baa8af59bf96357df
# bad: [668d34fc82d0b41be037bf8173e16d5291471023] MAINTAINERS: Update my email address
git bisect bad 668d34fc82d0b41be037bf8173e16d5291471023
# bad: [bfa26edeed6c88d96ae8d83c605f98d40f56394d] libstdc++: Refactor _ScalarAbi<N> into _Abi<N, N>
git bisect bad bfa26edeed6c88d96ae8d83c605f98d40f56394d
# bad: [470f86dd50a8adedbaa6ae9468bf42bfe89d1a36] fix: Check if loop_vinfo is null before dereferencing.
git bisect bad 470f86dd50a8adedbaa6ae9468bf42bfe89d1a36
# good: [1948a863280464ed60168d170ab13580bb6bb51b] c++: co_await and ->* [PR121094]
git bisect good 1948a863280464ed60168d170ab13580bb6bb51b
# good: [a085455306ec4aa15a11efacd994968bf951f7b6] c++: co_await and structured bindings [PR124584]
git bisect good a085455306ec4aa15a11efacd994968bf951f7b6
# first bad commit: [470f86dd50a8adedbaa6ae9468bf42bfe89d1a36] fix: Check if loop_vinfo is null before dereferencing.
# first bad commit: [470f86dd50a8adedbaa6ae9468bf42bfe89d1a36] fix: Check if loop_vinfo is null before dereferencing.