# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mattr=+m -mtriple=riscv32 -run-pass=legalizer %s -o - \
# RUN: | FileCheck %s --check-prefix=RV32I
# RUN: llc -mattr=+m -mtriple=riscv32 -mattr=+zbb -run-pass=legalizer %s -o - \
# RUN: | FileCheck %s --check-prefix=RV32ZBB

---
name:            cttz_i8
body:             |
  bb.1:
    liveins: $x10

    ; RV32I-LABEL: name: cttz_i8
    ; RV32I: liveins: $x10
    ; RV32I-NEXT: {{  $}}
    ; RV32I-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32I-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; RV32I-NEXT: [[XOR:%[0-9]+]]:_(s32) = G_XOR [[COPY]], [[C]]
    ; RV32I-NEXT: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C]]
    ; RV32I-NEXT: [[AND:%[0-9]+]]:_(s32) = G_AND [[XOR]], [[ADD]]
    ; RV32I-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
    ; RV32I-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
    ; RV32I-NEXT: [[AND1:%[0-9]+]]:_(s32) = G_AND [[AND]], [[C2]]
    ; RV32I-NEXT: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[AND1]], [[C1]](s32)
    ; RV32I-NEXT: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 85
    ; RV32I-NEXT: [[AND2:%[0-9]+]]:_(s32) = G_AND [[LSHR]], [[C3]]
    ; RV32I-NEXT: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[AND]], [[AND2]]
    ; RV32I-NEXT: [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
    ; RV32I-NEXT: [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
    ; RV32I-NEXT: [[AND3:%[0-9]+]]:_(s32) = G_AND [[SUB]], [[C5]]
    ; RV32I-NEXT: [[LSHR1:%[0-9]+]]:_(s32) = G_LSHR [[AND3]], [[C4]](s32)
    ; RV32I-NEXT: [[C6:%[0-9]+]]:_(s32) = G_CONSTANT i32 51
    ; RV32I-NEXT: [[AND4:%[0-9]+]]:_(s32) = G_AND [[LSHR1]], [[C6]]
    ; RV32I-NEXT: [[AND5:%[0-9]+]]:_(s32) = G_AND [[SUB]], [[C6]]
    ; RV32I-NEXT: [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[AND4]], [[AND5]]
    ; RV32I-NEXT: [[C7:%[0-9]+]]:_(s32) = G_CONSTANT i32 4
    ; RV32I-NEXT: [[LSHR2:%[0-9]+]]:_(s32) = G_LSHR [[ADD1]], [[C7]](s32)
    ; RV32I-NEXT: [[ADD2:%[0-9]+]]:_(s32) = G_ADD [[LSHR2]], [[ADD1]]
    ; RV32I-NEXT: [[C8:%[0-9]+]]:_(s32) = G_CONSTANT i32 15
    ; RV32I-NEXT: [[AND6:%[0-9]+]]:_(s32) = G_AND [[ADD2]], [[C8]]
    ; RV32I-NEXT: [[C9:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
    ; RV32I-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[AND6]], [[C9]]
    ; RV32I-NEXT: [[C10:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
    ; RV32I-NEXT: [[LSHR3:%[0-9]+]]:_(s32) = G_LSHR [[MUL]], [[C10]](s32)
    ; RV32I-NEXT: $x10 = COPY [[LSHR3]](s32)
    ; RV32I-NEXT: PseudoRET implicit $x10
    ;
    ; RV32ZBB-LABEL: name: cttz_i8
    ; RV32ZBB: liveins: $x10
    ; RV32ZBB-NEXT: {{  $}}
    ; RV32ZBB-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32ZBB-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 256
    ; RV32ZBB-NEXT: [[OR:%[0-9]+]]:_(s32) = G_OR [[COPY]], [[C]]
    ; RV32ZBB-NEXT: [[CTTZ:%[0-9]+]]:_(s32) = G_CTTZ [[OR]](s32)
    ; RV32ZBB-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY [[CTTZ]](s32)
    ; RV32ZBB-NEXT: $x10 = COPY [[COPY1]](s32)
    ; RV32ZBB-NEXT: PseudoRET implicit $x10
    %1:_(s32) = COPY $x10
    %0:_(s8) = G_TRUNC %1(s32)
    %2:_(s8) = G_CTTZ %0(s8)
    %3:_(s32) = G_ANYEXT %2(s8)
    $x10 = COPY %3(s32)
    PseudoRET implicit $x10

...
---
name:            cttz_i16
body:             |
  bb.1:
    liveins: $x10

    ; RV32I-LABEL: name: cttz_i16
    ; RV32I: liveins: $x10
    ; RV32I-NEXT: {{  $}}
    ; RV32I-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32I-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; RV32I-NEXT: [[XOR:%[0-9]+]]:_(s32) = G_XOR [[COPY]], [[C]]
    ; RV32I-NEXT: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C]]
    ; RV32I-NEXT: [[AND:%[0-9]+]]:_(s32) = G_AND [[XOR]], [[ADD]]
    ; RV32I-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
    ; RV32I-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 65535
    ; RV32I-NEXT: [[AND1:%[0-9]+]]:_(s32) = G_AND [[AND]], [[C2]]
    ; RV32I-NEXT: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[AND1]], [[C1]](s32)
    ; RV32I-NEXT: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 21845
    ; RV32I-NEXT: [[AND2:%[0-9]+]]:_(s32) = G_AND [[LSHR]], [[C3]]
    ; RV32I-NEXT: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[AND]], [[AND2]]
    ; RV32I-NEXT: [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
    ; RV32I-NEXT: [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 65535
    ; RV32I-NEXT: [[AND3:%[0-9]+]]:_(s32) = G_AND [[SUB]], [[C5]]
    ; RV32I-NEXT: [[LSHR1:%[0-9]+]]:_(s32) = G_LSHR [[AND3]], [[C4]](s32)
    ; RV32I-NEXT: [[C6:%[0-9]+]]:_(s32) = G_CONSTANT i32 13107
    ; RV32I-NEXT: [[AND4:%[0-9]+]]:_(s32) = G_AND [[LSHR1]], [[C6]]
    ; RV32I-NEXT: [[AND5:%[0-9]+]]:_(s32) = G_AND [[SUB]], [[C6]]
    ; RV32I-NEXT: [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[AND4]], [[AND5]]
    ; RV32I-NEXT: [[C7:%[0-9]+]]:_(s32) = G_CONSTANT i32 4
    ; RV32I-NEXT: [[LSHR2:%[0-9]+]]:_(s32) = G_LSHR [[ADD1]], [[C7]](s32)
    ; RV32I-NEXT: [[ADD2:%[0-9]+]]:_(s32) = G_ADD [[LSHR2]], [[ADD1]]
    ; RV32I-NEXT: [[C8:%[0-9]+]]:_(s32) = G_CONSTANT i32 3855
    ; RV32I-NEXT: [[AND6:%[0-9]+]]:_(s32) = G_AND [[ADD2]], [[C8]]
    ; RV32I-NEXT: [[C9:%[0-9]+]]:_(s32) = G_CONSTANT i32 257
    ; RV32I-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[AND6]], [[C9]]
    ; RV32I-NEXT: [[C10:%[0-9]+]]:_(s32) = G_CONSTANT i32 8
    ; RV32I-NEXT: [[C11:%[0-9]+]]:_(s32) = G_CONSTANT i32 65535
    ; RV32I-NEXT: [[AND7:%[0-9]+]]:_(s32) = G_AND [[MUL]], [[C11]]
    ; RV32I-NEXT: [[LSHR3:%[0-9]+]]:_(s32) = G_LSHR [[AND7]], [[C10]](s32)
    ; RV32I-NEXT: $x10 = COPY [[LSHR3]](s32)
    ; RV32I-NEXT: PseudoRET implicit $x10
    ;
    ; RV32ZBB-LABEL: name: cttz_i16
    ; RV32ZBB: liveins: $x10
    ; RV32ZBB-NEXT: {{  $}}
    ; RV32ZBB-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32ZBB-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 65536
    ; RV32ZBB-NEXT: [[OR:%[0-9]+]]:_(s32) = G_OR [[COPY]], [[C]]
    ; RV32ZBB-NEXT: [[CTTZ:%[0-9]+]]:_(s32) = G_CTTZ [[OR]](s32)
    ; RV32ZBB-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY [[CTTZ]](s32)
    ; RV32ZBB-NEXT: $x10 = COPY [[COPY1]](s32)
    ; RV32ZBB-NEXT: PseudoRET implicit $x10
    %1:_(s32) = COPY $x10
    %0:_(s16) = G_TRUNC %1(s32)
    %2:_(s16) = G_CTTZ %0(s16)
    %3:_(s32) = G_ANYEXT %2(s16)
    $x10 = COPY %3(s32)
    PseudoRET implicit $x10

...
---
name:            cttz_i32
body:             |
  bb.1:
    liveins: $x10

    ; RV32I-LABEL: name: cttz_i32
    ; RV32I: liveins: $x10
    ; RV32I-NEXT: {{  $}}
    ; RV32I-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32I-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; RV32I-NEXT: [[XOR:%[0-9]+]]:_(s32) = G_XOR [[COPY]], [[C]]
    ; RV32I-NEXT: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C]]
    ; RV32I-NEXT: [[AND:%[0-9]+]]:_(s32) = G_AND [[XOR]], [[ADD]]
    ; RV32I-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
    ; RV32I-NEXT: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[AND]], [[C1]](s32)
    ; RV32I-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 1431655765
    ; RV32I-NEXT: [[AND1:%[0-9]+]]:_(s32) = G_AND [[LSHR]], [[C2]]
    ; RV32I-NEXT: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[AND]], [[AND1]]
    ; RV32I-NEXT: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
    ; RV32I-NEXT: [[LSHR1:%[0-9]+]]:_(s32) = G_LSHR [[SUB]], [[C3]](s32)
    ; RV32I-NEXT: [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 858993459
    ; RV32I-NEXT: [[AND2:%[0-9]+]]:_(s32) = G_AND [[LSHR1]], [[C4]]
    ; RV32I-NEXT: [[AND3:%[0-9]+]]:_(s32) = G_AND [[SUB]], [[C4]]
    ; RV32I-NEXT: [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[AND2]], [[AND3]]
    ; RV32I-NEXT: [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 4
    ; RV32I-NEXT: [[LSHR2:%[0-9]+]]:_(s32) = G_LSHR [[ADD1]], [[C5]](s32)
    ; RV32I-NEXT: [[ADD2:%[0-9]+]]:_(s32) = G_ADD [[LSHR2]], [[ADD1]]
    ; RV32I-NEXT: [[C6:%[0-9]+]]:_(s32) = G_CONSTANT i32 252645135
    ; RV32I-NEXT: [[AND4:%[0-9]+]]:_(s32) = G_AND [[ADD2]], [[C6]]
    ; RV32I-NEXT: [[C7:%[0-9]+]]:_(s32) = G_CONSTANT i32 16843009
    ; RV32I-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[AND4]], [[C7]]
    ; RV32I-NEXT: [[C8:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
    ; RV32I-NEXT: [[LSHR3:%[0-9]+]]:_(s32) = G_LSHR [[MUL]], [[C8]](s32)
    ; RV32I-NEXT: $x10 = COPY [[LSHR3]](s32)
    ; RV32I-NEXT: PseudoRET implicit $x10
    ;
    ; RV32ZBB-LABEL: name: cttz_i32
    ; RV32ZBB: liveins: $x10
    ; RV32ZBB-NEXT: {{  $}}
    ; RV32ZBB-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32ZBB-NEXT: [[CTTZ:%[0-9]+]]:_(s32) = G_CTTZ [[COPY]](s32)
    ; RV32ZBB-NEXT: $x10 = COPY [[CTTZ]](s32)
    ; RV32ZBB-NEXT: PseudoRET implicit $x10
    %0:_(s32) = COPY $x10
    %1:_(s32) = G_CTTZ %0(s32)
    $x10 = COPY %1(s32)
    PseudoRET implicit $x10

...
---
name:            cttz_i64
body:             |
  bb.1:
    liveins: $x10, $x11

    ; RV32I-LABEL: name: cttz_i64
    ; RV32I: liveins: $x10, $x11
    ; RV32I-NEXT: {{  $}}
    ; RV32I-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32I-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
    ; RV32I-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
    ; RV32I-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(eq), [[COPY]](s32), [[C]]
    ; RV32I-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; RV32I-NEXT: [[XOR:%[0-9]+]]:_(s32) = G_XOR [[COPY1]], [[C1]]
    ; RV32I-NEXT: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY1]], [[C1]]
    ; RV32I-NEXT: [[AND:%[0-9]+]]:_(s32) = G_AND [[XOR]], [[ADD]]
    ; RV32I-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
    ; RV32I-NEXT: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[AND]], [[C2]](s32)
    ; RV32I-NEXT: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 1431655765
    ; RV32I-NEXT: [[AND1:%[0-9]+]]:_(s32) = G_AND [[LSHR]], [[C3]]
    ; RV32I-NEXT: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[AND]], [[AND1]]
    ; RV32I-NEXT: [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
    ; RV32I-NEXT: [[LSHR1:%[0-9]+]]:_(s32) = G_LSHR [[SUB]], [[C4]](s32)
    ; RV32I-NEXT: [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 858993459
    ; RV32I-NEXT: [[AND2:%[0-9]+]]:_(s32) = G_AND [[LSHR1]], [[C5]]
    ; RV32I-NEXT: [[AND3:%[0-9]+]]:_(s32) = G_AND [[SUB]], [[C5]]
    ; RV32I-NEXT: [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[AND2]], [[AND3]]
    ; RV32I-NEXT: [[C6:%[0-9]+]]:_(s32) = G_CONSTANT i32 4
    ; RV32I-NEXT: [[LSHR2:%[0-9]+]]:_(s32) = G_LSHR [[ADD1]], [[C6]](s32)
    ; RV32I-NEXT: [[ADD2:%[0-9]+]]:_(s32) = G_ADD [[LSHR2]], [[ADD1]]
    ; RV32I-NEXT: [[C7:%[0-9]+]]:_(s32) = G_CONSTANT i32 252645135
    ; RV32I-NEXT: [[AND4:%[0-9]+]]:_(s32) = G_AND [[ADD2]], [[C7]]
    ; RV32I-NEXT: [[C8:%[0-9]+]]:_(s32) = G_CONSTANT i32 16843009
    ; RV32I-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[AND4]], [[C8]]
    ; RV32I-NEXT: [[C9:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
    ; RV32I-NEXT: [[LSHR3:%[0-9]+]]:_(s32) = G_LSHR [[MUL]], [[C9]](s32)
    ; RV32I-NEXT: [[C10:%[0-9]+]]:_(s32) = G_CONSTANT i32 32
    ; RV32I-NEXT: [[ADD3:%[0-9]+]]:_(s32) = G_ADD [[LSHR3]], [[C10]]
    ; RV32I-NEXT: [[C11:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; RV32I-NEXT: [[XOR1:%[0-9]+]]:_(s32) = G_XOR [[COPY]], [[C11]]
    ; RV32I-NEXT: [[ADD4:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C11]]
    ; RV32I-NEXT: [[AND5:%[0-9]+]]:_(s32) = G_AND [[XOR1]], [[ADD4]]
    ; RV32I-NEXT: [[C12:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
    ; RV32I-NEXT: [[LSHR4:%[0-9]+]]:_(s32) = G_LSHR [[AND5]], [[C12]](s32)
    ; RV32I-NEXT: [[C13:%[0-9]+]]:_(s32) = G_CONSTANT i32 1431655765
    ; RV32I-NEXT: [[AND6:%[0-9]+]]:_(s32) = G_AND [[LSHR4]], [[C13]]
    ; RV32I-NEXT: [[SUB1:%[0-9]+]]:_(s32) = G_SUB [[AND5]], [[AND6]]
    ; RV32I-NEXT: [[C14:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
    ; RV32I-NEXT: [[LSHR5:%[0-9]+]]:_(s32) = G_LSHR [[SUB1]], [[C14]](s32)
    ; RV32I-NEXT: [[C15:%[0-9]+]]:_(s32) = G_CONSTANT i32 858993459
    ; RV32I-NEXT: [[AND7:%[0-9]+]]:_(s32) = G_AND [[LSHR5]], [[C15]]
    ; RV32I-NEXT: [[AND8:%[0-9]+]]:_(s32) = G_AND [[SUB1]], [[C15]]
    ; RV32I-NEXT: [[ADD5:%[0-9]+]]:_(s32) = G_ADD [[AND7]], [[AND8]]
    ; RV32I-NEXT: [[C16:%[0-9]+]]:_(s32) = G_CONSTANT i32 4
    ; RV32I-NEXT: [[LSHR6:%[0-9]+]]:_(s32) = G_LSHR [[ADD5]], [[C16]](s32)
    ; RV32I-NEXT: [[ADD6:%[0-9]+]]:_(s32) = G_ADD [[LSHR6]], [[ADD5]]
    ; RV32I-NEXT: [[C17:%[0-9]+]]:_(s32) = G_CONSTANT i32 252645135
    ; RV32I-NEXT: [[AND9:%[0-9]+]]:_(s32) = G_AND [[ADD6]], [[C17]]
    ; RV32I-NEXT: [[C18:%[0-9]+]]:_(s32) = G_CONSTANT i32 16843009
    ; RV32I-NEXT: [[MUL1:%[0-9]+]]:_(s32) = G_MUL [[AND9]], [[C18]]
    ; RV32I-NEXT: [[C19:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
    ; RV32I-NEXT: [[LSHR7:%[0-9]+]]:_(s32) = G_LSHR [[MUL1]], [[C19]](s32)
    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:_(s32) = G_SELECT [[ICMP]](s32), [[ADD3]], [[LSHR7]]
    ; RV32I-NEXT: [[C20:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
    ; RV32I-NEXT: $x10 = COPY [[SELECT]](s32)
    ; RV32I-NEXT: $x11 = COPY [[C20]](s32)
    ; RV32I-NEXT: PseudoRET implicit $x10, implicit $x11
    ;
    ; RV32ZBB-LABEL: name: cttz_i64
    ; RV32ZBB: liveins: $x10, $x11
    ; RV32ZBB-NEXT: {{  $}}
    ; RV32ZBB-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32ZBB-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
    ; RV32ZBB-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
    ; RV32ZBB-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(eq), [[COPY]](s32), [[C]]
    ; RV32ZBB-NEXT: [[CTTZ:%[0-9]+]]:_(s32) = G_CTTZ [[COPY1]](s32)
    ; RV32ZBB-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 32
    ; RV32ZBB-NEXT: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[CTTZ]], [[C1]]
    ; RV32ZBB-NEXT: [[CTTZ1:%[0-9]+]]:_(s32) = G_CTTZ [[COPY]](s32)
    ; RV32ZBB-NEXT: [[SELECT:%[0-9]+]]:_(s32) = G_SELECT [[ICMP]](s32), [[ADD]], [[CTTZ1]]
    ; RV32ZBB-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
    ; RV32ZBB-NEXT: $x10 = COPY [[SELECT]](s32)
    ; RV32ZBB-NEXT: $x11 = COPY [[C2]](s32)
    ; RV32ZBB-NEXT: PseudoRET implicit $x10, implicit $x11
    %1:_(s32) = COPY $x10
    %2:_(s32) = COPY $x11
    %0:_(s64) = G_MERGE_VALUES %1(s32), %2(s32)
    %3:_(s64) = G_CTTZ %0(s64)
    %4:_(s32), %5:_(s32) = G_UNMERGE_VALUES %3(s64)
    $x10 = COPY %4(s32)
    $x11 = COPY %5(s32)
    PseudoRET implicit $x10, implicit $x11

...
---
name:            cttz_zero_undef_i8
body:             |
  bb.1:
    liveins: $x10

    ; RV32I-LABEL: name: cttz_zero_undef_i8
    ; RV32I: liveins: $x10
    ; RV32I-NEXT: {{  $}}
    ; RV32I-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32I-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; RV32I-NEXT: [[XOR:%[0-9]+]]:_(s32) = G_XOR [[COPY]], [[C]]
    ; RV32I-NEXT: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C]]
    ; RV32I-NEXT: [[AND:%[0-9]+]]:_(s32) = G_AND [[XOR]], [[ADD]]
    ; RV32I-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
    ; RV32I-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
    ; RV32I-NEXT: [[AND1:%[0-9]+]]:_(s32) = G_AND [[AND]], [[C2]]
    ; RV32I-NEXT: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[AND1]], [[C1]](s32)
    ; RV32I-NEXT: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 85
    ; RV32I-NEXT: [[AND2:%[0-9]+]]:_(s32) = G_AND [[LSHR]], [[C3]]
    ; RV32I-NEXT: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[AND]], [[AND2]]
    ; RV32I-NEXT: [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
    ; RV32I-NEXT: [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
    ; RV32I-NEXT: [[AND3:%[0-9]+]]:_(s32) = G_AND [[SUB]], [[C5]]
    ; RV32I-NEXT: [[LSHR1:%[0-9]+]]:_(s32) = G_LSHR [[AND3]], [[C4]](s32)
    ; RV32I-NEXT: [[C6:%[0-9]+]]:_(s32) = G_CONSTANT i32 51
    ; RV32I-NEXT: [[AND4:%[0-9]+]]:_(s32) = G_AND [[LSHR1]], [[C6]]
    ; RV32I-NEXT: [[AND5:%[0-9]+]]:_(s32) = G_AND [[SUB]], [[C6]]
    ; RV32I-NEXT: [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[AND4]], [[AND5]]
    ; RV32I-NEXT: [[C7:%[0-9]+]]:_(s32) = G_CONSTANT i32 4
    ; RV32I-NEXT: [[LSHR2:%[0-9]+]]:_(s32) = G_LSHR [[ADD1]], [[C7]](s32)
    ; RV32I-NEXT: [[ADD2:%[0-9]+]]:_(s32) = G_ADD [[LSHR2]], [[ADD1]]
    ; RV32I-NEXT: [[C8:%[0-9]+]]:_(s32) = G_CONSTANT i32 15
    ; RV32I-NEXT: [[AND6:%[0-9]+]]:_(s32) = G_AND [[ADD2]], [[C8]]
    ; RV32I-NEXT: [[C9:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
    ; RV32I-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[AND6]], [[C9]]
    ; RV32I-NEXT: [[C10:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
    ; RV32I-NEXT: [[LSHR3:%[0-9]+]]:_(s32) = G_LSHR [[MUL]], [[C10]](s32)
    ; RV32I-NEXT: $x10 = COPY [[LSHR3]](s32)
    ; RV32I-NEXT: PseudoRET implicit $x10
    ;
    ; RV32ZBB-LABEL: name: cttz_zero_undef_i8
    ; RV32ZBB: liveins: $x10
    ; RV32ZBB-NEXT: {{  $}}
    ; RV32ZBB-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32ZBB-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 256
    ; RV32ZBB-NEXT: [[OR:%[0-9]+]]:_(s32) = G_OR [[COPY]], [[C]]
    ; RV32ZBB-NEXT: [[CTTZ:%[0-9]+]]:_(s32) = G_CTTZ [[OR]](s32)
    ; RV32ZBB-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY [[CTTZ]](s32)
    ; RV32ZBB-NEXT: $x10 = COPY [[COPY1]](s32)
    ; RV32ZBB-NEXT: PseudoRET implicit $x10
    %1:_(s32) = COPY $x10
    %0:_(s8) = G_TRUNC %1(s32)
    %2:_(s8) = G_CTTZ_ZERO_UNDEF %0(s8)
    %3:_(s32) = G_ANYEXT %2(s8)
    $x10 = COPY %3(s32)
    PseudoRET implicit $x10

...
---
name:            cttz_zero_undef_i16
body:             |
  bb.1:
    liveins: $x10

    ; RV32I-LABEL: name: cttz_zero_undef_i16
    ; RV32I: liveins: $x10
    ; RV32I-NEXT: {{  $}}
    ; RV32I-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32I-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; RV32I-NEXT: [[XOR:%[0-9]+]]:_(s32) = G_XOR [[COPY]], [[C]]
    ; RV32I-NEXT: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C]]
    ; RV32I-NEXT: [[AND:%[0-9]+]]:_(s32) = G_AND [[XOR]], [[ADD]]
    ; RV32I-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
    ; RV32I-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 65535
    ; RV32I-NEXT: [[AND1:%[0-9]+]]:_(s32) = G_AND [[AND]], [[C2]]
    ; RV32I-NEXT: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[AND1]], [[C1]](s32)
    ; RV32I-NEXT: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 21845
    ; RV32I-NEXT: [[AND2:%[0-9]+]]:_(s32) = G_AND [[LSHR]], [[C3]]
    ; RV32I-NEXT: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[AND]], [[AND2]]
    ; RV32I-NEXT: [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
    ; RV32I-NEXT: [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 65535
    ; RV32I-NEXT: [[AND3:%[0-9]+]]:_(s32) = G_AND [[SUB]], [[C5]]
    ; RV32I-NEXT: [[LSHR1:%[0-9]+]]:_(s32) = G_LSHR [[AND3]], [[C4]](s32)
    ; RV32I-NEXT: [[C6:%[0-9]+]]:_(s32) = G_CONSTANT i32 13107
    ; RV32I-NEXT: [[AND4:%[0-9]+]]:_(s32) = G_AND [[LSHR1]], [[C6]]
    ; RV32I-NEXT: [[AND5:%[0-9]+]]:_(s32) = G_AND [[SUB]], [[C6]]
    ; RV32I-NEXT: [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[AND4]], [[AND5]]
    ; RV32I-NEXT: [[C7:%[0-9]+]]:_(s32) = G_CONSTANT i32 4
    ; RV32I-NEXT: [[LSHR2:%[0-9]+]]:_(s32) = G_LSHR [[ADD1]], [[C7]](s32)
    ; RV32I-NEXT: [[ADD2:%[0-9]+]]:_(s32) = G_ADD [[LSHR2]], [[ADD1]]
    ; RV32I-NEXT: [[C8:%[0-9]+]]:_(s32) = G_CONSTANT i32 3855
    ; RV32I-NEXT: [[AND6:%[0-9]+]]:_(s32) = G_AND [[ADD2]], [[C8]]
    ; RV32I-NEXT: [[C9:%[0-9]+]]:_(s32) = G_CONSTANT i32 257
    ; RV32I-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[AND6]], [[C9]]
    ; RV32I-NEXT: [[C10:%[0-9]+]]:_(s32) = G_CONSTANT i32 8
    ; RV32I-NEXT: [[C11:%[0-9]+]]:_(s32) = G_CONSTANT i32 65535
    ; RV32I-NEXT: [[AND7:%[0-9]+]]:_(s32) = G_AND [[MUL]], [[C11]]
    ; RV32I-NEXT: [[LSHR3:%[0-9]+]]:_(s32) = G_LSHR [[AND7]], [[C10]](s32)
    ; RV32I-NEXT: $x10 = COPY [[LSHR3]](s32)
    ; RV32I-NEXT: PseudoRET implicit $x10
    ;
    ; RV32ZBB-LABEL: name: cttz_zero_undef_i16
    ; RV32ZBB: liveins: $x10
    ; RV32ZBB-NEXT: {{  $}}
    ; RV32ZBB-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32ZBB-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 65536
    ; RV32ZBB-NEXT: [[OR:%[0-9]+]]:_(s32) = G_OR [[COPY]], [[C]]
    ; RV32ZBB-NEXT: [[CTTZ:%[0-9]+]]:_(s32) = G_CTTZ [[OR]](s32)
    ; RV32ZBB-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY [[CTTZ]](s32)
    ; RV32ZBB-NEXT: $x10 = COPY [[COPY1]](s32)
    ; RV32ZBB-NEXT: PseudoRET implicit $x10
    %1:_(s32) = COPY $x10
    %0:_(s16) = G_TRUNC %1(s32)
    %2:_(s16) = G_CTTZ_ZERO_UNDEF %0(s16)
    %3:_(s32) = G_ANYEXT %2(s16)
    $x10 = COPY %3(s32)
    PseudoRET implicit $x10

...
---
name:            cttz_zero_undef_i32
body:             |
  bb.1:
    liveins: $x10

    ; RV32I-LABEL: name: cttz_zero_undef_i32
    ; RV32I: liveins: $x10
    ; RV32I-NEXT: {{  $}}
    ; RV32I-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32I-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; RV32I-NEXT: [[XOR:%[0-9]+]]:_(s32) = G_XOR [[COPY]], [[C]]
    ; RV32I-NEXT: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C]]
    ; RV32I-NEXT: [[AND:%[0-9]+]]:_(s32) = G_AND [[XOR]], [[ADD]]
    ; RV32I-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
    ; RV32I-NEXT: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[AND]], [[C1]](s32)
    ; RV32I-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 1431655765
    ; RV32I-NEXT: [[AND1:%[0-9]+]]:_(s32) = G_AND [[LSHR]], [[C2]]
    ; RV32I-NEXT: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[AND]], [[AND1]]
    ; RV32I-NEXT: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
    ; RV32I-NEXT: [[LSHR1:%[0-9]+]]:_(s32) = G_LSHR [[SUB]], [[C3]](s32)
    ; RV32I-NEXT: [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 858993459
    ; RV32I-NEXT: [[AND2:%[0-9]+]]:_(s32) = G_AND [[LSHR1]], [[C4]]
    ; RV32I-NEXT: [[AND3:%[0-9]+]]:_(s32) = G_AND [[SUB]], [[C4]]
    ; RV32I-NEXT: [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[AND2]], [[AND3]]
    ; RV32I-NEXT: [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 4
    ; RV32I-NEXT: [[LSHR2:%[0-9]+]]:_(s32) = G_LSHR [[ADD1]], [[C5]](s32)
    ; RV32I-NEXT: [[ADD2:%[0-9]+]]:_(s32) = G_ADD [[LSHR2]], [[ADD1]]
    ; RV32I-NEXT: [[C6:%[0-9]+]]:_(s32) = G_CONSTANT i32 252645135
    ; RV32I-NEXT: [[AND4:%[0-9]+]]:_(s32) = G_AND [[ADD2]], [[C6]]
    ; RV32I-NEXT: [[C7:%[0-9]+]]:_(s32) = G_CONSTANT i32 16843009
    ; RV32I-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[AND4]], [[C7]]
    ; RV32I-NEXT: [[C8:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
    ; RV32I-NEXT: [[LSHR3:%[0-9]+]]:_(s32) = G_LSHR [[MUL]], [[C8]](s32)
    ; RV32I-NEXT: $x10 = COPY [[LSHR3]](s32)
    ; RV32I-NEXT: PseudoRET implicit $x10
    ;
    ; RV32ZBB-LABEL: name: cttz_zero_undef_i32
    ; RV32ZBB: liveins: $x10
    ; RV32ZBB-NEXT: {{  $}}
    ; RV32ZBB-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32ZBB-NEXT: [[CTTZ:%[0-9]+]]:_(s32) = G_CTTZ [[COPY]](s32)
    ; RV32ZBB-NEXT: $x10 = COPY [[CTTZ]](s32)
    ; RV32ZBB-NEXT: PseudoRET implicit $x10
    %0:_(s32) = COPY $x10
    %1:_(s32) = G_CTTZ_ZERO_UNDEF %0(s32)
    $x10 = COPY %1(s32)
    PseudoRET implicit $x10

...
---
name:            cttz_zero_undef_i64
body:             |
  bb.1:
    liveins: $x10, $x11

    ; RV32I-LABEL: name: cttz_zero_undef_i64
    ; RV32I: liveins: $x10, $x11
    ; RV32I-NEXT: {{  $}}
    ; RV32I-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32I-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
    ; RV32I-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
    ; RV32I-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(eq), [[COPY]](s32), [[C]]
    ; RV32I-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; RV32I-NEXT: [[XOR:%[0-9]+]]:_(s32) = G_XOR [[COPY1]], [[C1]]
    ; RV32I-NEXT: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY1]], [[C1]]
    ; RV32I-NEXT: [[AND:%[0-9]+]]:_(s32) = G_AND [[XOR]], [[ADD]]
    ; RV32I-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
    ; RV32I-NEXT: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[AND]], [[C2]](s32)
    ; RV32I-NEXT: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 1431655765
    ; RV32I-NEXT: [[AND1:%[0-9]+]]:_(s32) = G_AND [[LSHR]], [[C3]]
    ; RV32I-NEXT: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[AND]], [[AND1]]
    ; RV32I-NEXT: [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
    ; RV32I-NEXT: [[LSHR1:%[0-9]+]]:_(s32) = G_LSHR [[SUB]], [[C4]](s32)
    ; RV32I-NEXT: [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 858993459
    ; RV32I-NEXT: [[AND2:%[0-9]+]]:_(s32) = G_AND [[LSHR1]], [[C5]]
    ; RV32I-NEXT: [[AND3:%[0-9]+]]:_(s32) = G_AND [[SUB]], [[C5]]
    ; RV32I-NEXT: [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[AND2]], [[AND3]]
    ; RV32I-NEXT: [[C6:%[0-9]+]]:_(s32) = G_CONSTANT i32 4
    ; RV32I-NEXT: [[LSHR2:%[0-9]+]]:_(s32) = G_LSHR [[ADD1]], [[C6]](s32)
    ; RV32I-NEXT: [[ADD2:%[0-9]+]]:_(s32) = G_ADD [[LSHR2]], [[ADD1]]
    ; RV32I-NEXT: [[C7:%[0-9]+]]:_(s32) = G_CONSTANT i32 252645135
    ; RV32I-NEXT: [[AND4:%[0-9]+]]:_(s32) = G_AND [[ADD2]], [[C7]]
    ; RV32I-NEXT: [[C8:%[0-9]+]]:_(s32) = G_CONSTANT i32 16843009
    ; RV32I-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[AND4]], [[C8]]
    ; RV32I-NEXT: [[C9:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
    ; RV32I-NEXT: [[LSHR3:%[0-9]+]]:_(s32) = G_LSHR [[MUL]], [[C9]](s32)
    ; RV32I-NEXT: [[C10:%[0-9]+]]:_(s32) = G_CONSTANT i32 32
    ; RV32I-NEXT: [[ADD3:%[0-9]+]]:_(s32) = G_ADD [[LSHR3]], [[C10]]
    ; RV32I-NEXT: [[C11:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
    ; RV32I-NEXT: [[XOR1:%[0-9]+]]:_(s32) = G_XOR [[COPY]], [[C11]]
    ; RV32I-NEXT: [[ADD4:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C11]]
    ; RV32I-NEXT: [[AND5:%[0-9]+]]:_(s32) = G_AND [[XOR1]], [[ADD4]]
    ; RV32I-NEXT: [[C12:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
    ; RV32I-NEXT: [[LSHR4:%[0-9]+]]:_(s32) = G_LSHR [[AND5]], [[C12]](s32)
    ; RV32I-NEXT: [[C13:%[0-9]+]]:_(s32) = G_CONSTANT i32 1431655765
    ; RV32I-NEXT: [[AND6:%[0-9]+]]:_(s32) = G_AND [[LSHR4]], [[C13]]
    ; RV32I-NEXT: [[SUB1:%[0-9]+]]:_(s32) = G_SUB [[AND5]], [[AND6]]
    ; RV32I-NEXT: [[C14:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
    ; RV32I-NEXT: [[LSHR5:%[0-9]+]]:_(s32) = G_LSHR [[SUB1]], [[C14]](s32)
    ; RV32I-NEXT: [[C15:%[0-9]+]]:_(s32) = G_CONSTANT i32 858993459
    ; RV32I-NEXT: [[AND7:%[0-9]+]]:_(s32) = G_AND [[LSHR5]], [[C15]]
    ; RV32I-NEXT: [[AND8:%[0-9]+]]:_(s32) = G_AND [[SUB1]], [[C15]]
    ; RV32I-NEXT: [[ADD5:%[0-9]+]]:_(s32) = G_ADD [[AND7]], [[AND8]]
    ; RV32I-NEXT: [[C16:%[0-9]+]]:_(s32) = G_CONSTANT i32 4
    ; RV32I-NEXT: [[LSHR6:%[0-9]+]]:_(s32) = G_LSHR [[ADD5]], [[C16]](s32)
    ; RV32I-NEXT: [[ADD6:%[0-9]+]]:_(s32) = G_ADD [[LSHR6]], [[ADD5]]
    ; RV32I-NEXT: [[C17:%[0-9]+]]:_(s32) = G_CONSTANT i32 252645135
    ; RV32I-NEXT: [[AND9:%[0-9]+]]:_(s32) = G_AND [[ADD6]], [[C17]]
    ; RV32I-NEXT: [[C18:%[0-9]+]]:_(s32) = G_CONSTANT i32 16843009
    ; RV32I-NEXT: [[MUL1:%[0-9]+]]:_(s32) = G_MUL [[AND9]], [[C18]]
    ; RV32I-NEXT: [[C19:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
    ; RV32I-NEXT: [[LSHR7:%[0-9]+]]:_(s32) = G_LSHR [[MUL1]], [[C19]](s32)
    ; RV32I-NEXT: [[SELECT:%[0-9]+]]:_(s32) = G_SELECT [[ICMP]](s32), [[ADD3]], [[LSHR7]]
    ; RV32I-NEXT: [[C20:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
    ; RV32I-NEXT: $x10 = COPY [[SELECT]](s32)
    ; RV32I-NEXT: $x11 = COPY [[C20]](s32)
    ; RV32I-NEXT: PseudoRET implicit $x10, implicit $x11
    ;
    ; RV32ZBB-LABEL: name: cttz_zero_undef_i64
    ; RV32ZBB: liveins: $x10, $x11
    ; RV32ZBB-NEXT: {{  $}}
    ; RV32ZBB-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $x10
    ; RV32ZBB-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
    ; RV32ZBB-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
    ; RV32ZBB-NEXT: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(eq), [[COPY]](s32), [[C]]
    ; RV32ZBB-NEXT: [[CTTZ:%[0-9]+]]:_(s32) = G_CTTZ [[COPY1]](s32)
    ; RV32ZBB-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 32
    ; RV32ZBB-NEXT: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[CTTZ]], [[C1]]
    ; RV32ZBB-NEXT: [[CTTZ1:%[0-9]+]]:_(s32) = G_CTTZ [[COPY]](s32)
    ; RV32ZBB-NEXT: [[SELECT:%[0-9]+]]:_(s32) = G_SELECT [[ICMP]](s32), [[ADD]], [[CTTZ1]]
    ; RV32ZBB-NEXT: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
    ; RV32ZBB-NEXT: $x10 = COPY [[SELECT]](s32)
    ; RV32ZBB-NEXT: $x11 = COPY [[C2]](s32)
    ; RV32ZBB-NEXT: PseudoRET implicit $x10, implicit $x11
    %1:_(s32) = COPY $x10
    %2:_(s32) = COPY $x11
    %0:_(s64) = G_MERGE_VALUES %1(s32), %2(s32)
    %3:_(s64) = G_CTTZ_ZERO_UNDEF %0(s64)
    %4:_(s32), %5:_(s32) = G_UNMERGE_VALUES %3(s64)
    $x10 = COPY %4(s32)
    $x11 = COPY %5(s32)
    PseudoRET implicit $x10, implicit $x11

...