Regressions on master at commit r16-3423 vs commit r16-2714 on Linux/x86_64

Regressions on master at commit r16-3423 vs commit r16-2714 on Linux/x86_64
New failures:
FAIL: gcc.target/i386/vect_unroll-3.c scan-assembler-times (?n)vpdpbusd[^\\n]*ymm 4
FAIL: gcc.target/i386/vect_unroll-3.c scan-assembler-times (?n)vpdpbusd[^\\n]*ymm 4
FAIL: g++.dg/opt/pr94589-2.C  -std=gnu++20  scan-tree-dump-times optimized "i_[0-9]+\\(D\\) (?:<|<=|==|!=|>|>=) 5\\.0" 12
FAIL: g++.dg/opt/pr94589-2.C  -std=gnu++20  scan-tree-dump-times optimized "i_[0-9]+\\(D\\) (?:<|<=|==|!=|>|>=) 5\\.0" 12
FAIL: g++.dg/opt/pr94589-2.C  -std=gnu++23  scan-tree-dump-times optimized "i_[0-9]+\\(D\\) (?:<|<=|==|!=|>|>=) 5\\.0" 12
FAIL: g++.dg/opt/pr94589-2.C  -std=gnu++23  scan-tree-dump-times optimized "i_[0-9]+\\(D\\) (?:<|<=|==|!=|>|>=) 5\\.0" 12
FAIL: g++.dg/opt/pr94589-2.C  -std=gnu++26  scan-tree-dump-times optimized "i_[0-9]+\\(D\\) (?:<|<=|==|!=|>|>=) 5\\.0" 12
FAIL: g++.dg/opt/pr94589-2.C  -std=gnu++26  scan-tree-dump-times optimized "i_[0-9]+\\(D\\) (?:<|<=|==|!=|>|>=) 5\\.0" 12

New passes:
FAIL: gcc.dg/asm-hard-reg-1.c scan-assembler-times foo\t%ecx 2
FAIL: gcc.dg/asm-hard-reg-1.c scan-assembler-times foo\t%rcx 2
FAIL: gcc.dg/asm-hard-reg-2.c (test for excess errors)
FAIL: gcc.dg/asm-hard-reg-4.c (test for excess errors)
FAIL: gcc.dg/asm-hard-reg-5.c (test for excess errors)
FAIL: gcc.dg/asm-hard-reg-6.c scan-assembler-times bar\t%ebx,\\(%rsi\\) 1
FAIL: gcc.dg/asm-hard-reg-6.c scan-assembler-times foo\t%eax,%rcx 1
FAIL: gcc.target/i386/asm-hard-reg-2.c  (test for errors, line 15)
FAIL: gcc.target/i386/asm-hard-reg-2.c  (test for errors, line 16)
FAIL: gcc.target/i386/asm-hard-reg-2.c  (test for errors, line 19)
FAIL: gcc.target/i386/asm-hard-reg-2.c  (test for errors, line 20)
FAIL: gcc.target/i386/asm-hard-reg-2.c  (test for errors, line 21)
FAIL: gcc.target/i386/asm-hard-reg-2.c  (test for errors, line 22)
FAIL: gcc.target/i386/asm-hard-reg-2.c  (test for errors, line 25)
FAIL: gcc.target/i386/asm-hard-reg-2.c  (test for errors, line 26)
FAIL: gcc.target/i386/asm-hard-reg-2.c  (test for errors, line 29)
FAIL: gcc.target/i386/asm-hard-reg-2.c  (test for errors, line 30)
FAIL: gcc.target/i386/asm-hard-reg-2.c  (test for errors, line 31)
FAIL: gcc.target/i386/asm-hard-reg-2.c  (test for errors, line 32)
FAIL: gcc.target/i386/pr119795.c (internal compiler error: Segmentation fault)
FAIL: gcc.target/i386/pr119795.c (test for excess errors)
FAIL: gcc.target/i386/pr78904-1b.c scan-assembler-not movb
FAIL: gcc.target/i386/pr78904-1b.c scan-assembler-not movzbl
FAIL: gcc.target/i386/pr82524-3.c scan-assembler-not movzbl
FAIL: gcc.target/i386/pr82524.c scan-assembler-not mov[sz]bl
FAIL: gcc.target/i386/pr82524.c scan-assembler [ \t]notb