; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
; RUN: llc -mtriple=riscv32 -mattr=+m,+zcmp -verify-machineinstrs < %s | FileCheck %s --check-prefix=ZCMP
; RUN: llc -mtriple=riscv32 -mattr=+m,+xqccmp -verify-machineinstrs < %s | FileCheck %s --check-prefix=XQCCMP
; RUN: llc -mtriple=riscv32 -mattr=+m,+zcmp,+experimental-p -verify-machineinstrs < %s | FileCheck %s --check-prefix=ZCMP-P
; RUN: llc -mtriple=riscv64 -mattr=+m,+zcmp,+experimental-p -verify-machineinstrs < %s | FileCheck %s --check-prefix=ZCMP-P64

; This source code exposed a crash in the RISC-V Zcmp move merging pass.
; The root cause was: mergeGPRPairInsns being called on targets without
; Zdinx or P extension support, triggering an unreachable in
; getGPRPairCopyOpcode.

define void @test(i32 %arg0, i32 %arg1) nounwind {
; ZCMP-LABEL: test:
; ZCMP:       # %bb.0: # %entry
; ZCMP-NEXT:    #APP
; ZCMP-NEXT:    csrr a4, 66
; ZCMP-NEXT:    #NO_APP
; ZCMP-NEXT:    #APP
; ZCMP-NEXT:    csrr a5, 67
; ZCMP-NEXT:    #NO_APP
; ZCMP-NEXT:    #APP
; ZCMP-NEXT:    #NO_APP
; ZCMP-NEXT:    mv a0, a4
; ZCMP-NEXT:    mv a1, a5
; ZCMP-NEXT:    tail foo
;
; XQCCMP-LABEL: test:
; XQCCMP:       # %bb.0: # %entry
; XQCCMP-NEXT:    #APP
; XQCCMP-NEXT:    csrr a4, 66
; XQCCMP-NEXT:    #NO_APP
; XQCCMP-NEXT:    #APP
; XQCCMP-NEXT:    csrr a5, 67
; XQCCMP-NEXT:    #NO_APP
; XQCCMP-NEXT:    #APP
; XQCCMP-NEXT:    #NO_APP
; XQCCMP-NEXT:    mv a0, a4
; XQCCMP-NEXT:    mv a1, a5
; XQCCMP-NEXT:    tail foo
;
; ZCMP-P-LABEL: test:
; ZCMP-P:       # %bb.0: # %entry
; ZCMP-P-NEXT:    #APP
; ZCMP-P-NEXT:    csrr a4, 66
; ZCMP-P-NEXT:    #NO_APP
; ZCMP-P-NEXT:    #APP
; ZCMP-P-NEXT:    csrr a5, 67
; ZCMP-P-NEXT:    #NO_APP
; ZCMP-P-NEXT:    #APP
; ZCMP-P-NEXT:    #NO_APP
; ZCMP-P-NEXT:    padd.dw a0, a4, zero
; ZCMP-P-NEXT:    tail foo
;
; ZCMP-P64-LABEL: test:
; ZCMP-P64:       # %bb.0: # %entry
; ZCMP-P64-NEXT:    #APP
; ZCMP-P64-NEXT:    csrr a4, 66
; ZCMP-P64-NEXT:    #NO_APP
; ZCMP-P64-NEXT:    #APP
; ZCMP-P64-NEXT:    csrr a5, 67
; ZCMP-P64-NEXT:    #NO_APP
; ZCMP-P64-NEXT:    #APP
; ZCMP-P64-NEXT:    #NO_APP
; ZCMP-P64-NEXT:    mv a0, a4
; ZCMP-P64-NEXT:    mv a1, a5
; ZCMP-P64-NEXT:    tail foo
entry:
  %0 = tail call i32 asm sideeffect "csrr $0, 0x42", "=r"()
  %1 = tail call i32 asm sideeffect "csrr $0, 0x43", "=r"()
  tail call void asm sideeffect "", "~{x17},~{x10},~{x11},~{x12},~{x13}"()
  %cmp = icmp eq i32 %0, 11
  br i1 %cmp, label %if.else, label %if.else

if.else:
  %call = tail call i32 @foo(i32 %0, i32 %1)
  br label %if.end

if.end:
  ret void
}

declare i32 @foo(i32, i32)