third_party/llvm-project/llvm/test/CodeGen/Mips/compactbranches/no-beqzc-bnezc.ll

; RUN: llc -march=mipsel -mcpu=mips32r6 -disable-mips-delay-filler < %s | FileCheck %s
; RUN: llc -march=mips -mcpu=mips32r6 -disable-mips-delay-filler < %s -filetype=obj \
; RUN:     -o - | llvm-objdump -d - | FileCheck %s -check-prefix=ENCODING
; RUN: llc -march=mipsel -mcpu=mips64r6 -disable-mips-delay-filler -target-abi=n64 < %s | FileCheck %s
; RUN: llc -march=mips -mcpu=mips64r6 -disable-mips-delay-filler -target-abi=n64 < %s -filetype=obj \
; RUN:     -o - | llvm-objdump -d - | FileCheck %s -check-prefix=ENCODING

; bnezc and beqzc have restriction that $rt != 0

define i32 @f() {
; CHECK-LABEL: f:
; CHECK-NOT:   bnezc $0

  %cmp = icmp eq i32 1, 1
  br i1 %cmp, label %if.then, label %if.end

  if.then:
    ret i32 1

  if.end:
    ret i32 0
}

define i32 @f1() {
; CHECK-LABEL: f1:
; CHECK-NOT:   beqzc $0

  %cmp = icmp eq i32 0, 0
  br i1 %cmp, label %if.then, label %if.end

  if.then:
    ret i32 1

  if.end:
    ret i32 0
}

; We silently fixup cases where the register allocator or user has given us
; an instruction with incorrect operands that is trivially acceptable.
; beqc and bnec have the restriction that $rs < $rt.

define i32 @f2(i32 %a, i32 %b) {
; ENCODING-LABEL: f2:
; ENCODING-NOT:   beqc $5, $4
; ENCODING-NOT:   bnec $5, $4

  %cmp = icmp eq i32 %b, %a
  br i1 %cmp, label %if.then, label %if.end

  if.then:
    ret i32 1

  if.end:
    ret i32 0
}

define i64 @f3() {
; CHECK-LABEL: f3:
; CHECK-NOT:   bnezc $0

  %cmp = icmp eq i64 1, 1
  br i1 %cmp, label %if.then, label %if.end

  if.then:
    ret i64 1

  if.end:
    ret i64 0
}

define i64 @f4() {
; CHECK-LABEL: f4:
; CHECK-NOT:   beqzc $0

  %cmp = icmp eq i64 0, 0
  br i1 %cmp, label %if.then, label %if.end

  if.then:
    ret i64 1

  if.end:
    ret i64 0
}

; We silently fixup cases where the register allocator or user has given us
; an instruction with incorrect operands that is trivially acceptable.
; beqc and bnec have the restriction that $rs < $rt.

define i64 @f5(i64 %a, i64 %b) {
; ENCODING-LABEL: f5:
; ENCODING-NOT:   beqc $5, $4
; ENCODING-NOT:   bnec $5, $4

  %cmp = icmp eq i64 %b, %a
  br i1 %cmp, label %if.then, label %if.end

  if.then:
    ret i64 1

  if.end:
    ret i64 0
}

define i32 @f6(i32 %a) {
; CHECK-LABEL: f6:
; CHECK: beqzc ${{[0-9]+}}, $BB

  %cmp = icmp eq i32 %a, 0
  br i1 %cmp, label %if.then, label %if.end

  if.then:
    ret i32 1

  if.end:
    ret i32 0
}

define i32 @f7(i32 %a) {
; CHECK-LABEL: f7:
; CHECK: bnezc ${{[0-9]+}}, $BB

  %cmp = icmp eq i32 0, %a
  br i1 %cmp, label %if.then, label %if.end

  if.then:
    ret i32 1

  if.end:
    ret i32 0
}