On Linux/x86_64,

0a7dc4b6440faa8cd57c630f1e394a719469c399 is the first bad commit
commit 0a7dc4b6440faa8cd57c630f1e394a719469c399
Author: Martin Sebor <mse...@redhat.com>
Date:   Wed Dec 2 11:29:11 2020 -0700

    Adjust test to avoid ILP32 failures after r11-5622 (PR middle-end/97373)

caused

FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-11.c ilp32 (test for warnings, line 
207)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-11.c ilp32 (test for warnings, line 
215)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-11.c (test for excess errors)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c il32 (test for warnings, line 
119)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c ilp32 (test for warnings, line 
118)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c ilp32 (test for warnings, line 
121)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c ilp32 (test for warnings, line 
125)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c ilp32 (test for warnings, line 
129)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c ilp32 (test for warnings, line 
130)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c ilp32 (test for warnings, line 
131)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c ilp32 (test for warnings, line 
298)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c ilp32 (test for warnings, line 
299)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c ilp32 (test for warnings, line 
300)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c lp32 (test for warnings, line 
122)
FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-1.c (test for excess errors)

with GCC configured with

../../gcc/configure 
--prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r11-5674/usr 
--enable-clocale=gnu --with-system-zlib --with-demangler-in-ld 
--with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl 
--enable-libmpx x86_64-linux --disable-bootstrap

To reproduce:

$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/builtin-sprintf-warn-11.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/builtin-sprintf-warn-11.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/builtin-sprintf-warn-1.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/builtin-sprintf-warn-1.c 
--target_board='unix{-m32\ -march=cascadelake}'"

(Please do not reply to this email, for question about this report, contact me 
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