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llvm-project/llvm/test/CodeGen/LoongArch/ir-instruction/br.ll

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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc --mtriple=loongarch32 < %s | FileCheck %s --check-prefixes=ALL,LA32
; RUN: llc --mtriple=loongarch64 < %s | FileCheck %s --check-prefixes=ALL,LA64
define void @foo() noreturn nounwind {
; ALL-LABEL: foo:
; ALL: # %bb.0: # %entry
; ALL-NEXT: .LBB0_1: # %loop
; ALL-NEXT: # =>This Inner Loop Header: Depth=1
; ALL-NEXT: b .LBB0_1
entry:
br label %loop
loop:
br label %loop
}
define void @foo_br_eq(i32 %a, ptr %b) nounwind {
; LA32-LABEL: foo_br_eq:
; LA32: # %bb.0:
; LA32-NEXT: ld.w $a2, $a1, 0
; LA32-NEXT: beq $a2, $a0, .LBB1_2
; LA32-NEXT: # %bb.1: # %test
; LA32-NEXT: ld.w $a0, $a1, 0
; LA32-NEXT: .LBB1_2: # %end
; LA32-NEXT: ret
;
; LA64-LABEL: foo_br_eq:
; LA64: # %bb.0:
; LA64-NEXT: ld.wu $a2, $a1, 0
; LA64-NEXT: bstrpick.d $a0, $a0, 31, 0
; LA64-NEXT: beq $a2, $a0, .LBB1_2
; LA64-NEXT: # %bb.1: # %test
; LA64-NEXT: ld.w $a0, $a1, 0
; LA64-NEXT: .LBB1_2: # %end
; LA64-NEXT: ret
%val = load volatile i32, ptr %b
%cc = icmp eq i32 %val, %a
br i1 %cc, label %end, label %test
test:
%tmp = load volatile i32, ptr %b
br label %end
end:
ret void
}
define void @foo_br_ne(i32 %a, ptr %b) nounwind {
; LA32-LABEL: foo_br_ne:
; LA32: # %bb.0:
; LA32-NEXT: ld.w $a2, $a1, 0
; LA32-NEXT: bne $a2, $a0, .LBB2_2
; LA32-NEXT: # %bb.1: # %test
; LA32-NEXT: ld.w $a0, $a1, 0
; LA32-NEXT: .LBB2_2: # %end
; LA32-NEXT: ret
;
; LA64-LABEL: foo_br_ne:
; LA64: # %bb.0:
; LA64-NEXT: ld.wu $a2, $a1, 0
; LA64-NEXT: bstrpick.d $a0, $a0, 31, 0
; LA64-NEXT: bne $a2, $a0, .LBB2_2
; LA64-NEXT: # %bb.1: # %test
; LA64-NEXT: ld.w $a0, $a1, 0
; LA64-NEXT: .LBB2_2: # %end
; LA64-NEXT: ret
%val = load volatile i32, ptr %b
%cc = icmp ne i32 %val, %a
br i1 %cc, label %end, label %test
test:
%tmp = load volatile i32, ptr %b
br label %end
end:
ret void
}
define void @foo_br_slt(i32 %a, ptr %b) nounwind {
; LA32-LABEL: foo_br_slt:
; LA32: # %bb.0:
; LA32-NEXT: ld.w $a2, $a1, 0
; LA32-NEXT: blt $a2, $a0, .LBB3_2
; LA32-NEXT: # %bb.1: # %test
; LA32-NEXT: ld.w $a0, $a1, 0
; LA32-NEXT: .LBB3_2: # %end
; LA32-NEXT: ret
;
; LA64-LABEL: foo_br_slt:
; LA64: # %bb.0:
; LA64-NEXT: ld.w $a2, $a1, 0
; LA64-NEXT: addi.w $a0, $a0, 0
; LA64-NEXT: blt $a2, $a0, .LBB3_2
; LA64-NEXT: # %bb.1: # %test
; LA64-NEXT: ld.w $a0, $a1, 0
; LA64-NEXT: .LBB3_2: # %end
; LA64-NEXT: ret
%val = load volatile i32, ptr %b
%cc = icmp slt i32 %val, %a
br i1 %cc, label %end, label %test
test:
%tmp = load volatile i32, ptr %b
br label %end
end:
ret void
}
define void @foo_br_sge(i32 %a, ptr %b) nounwind {
; LA32-LABEL: foo_br_sge:
; LA32: # %bb.0:
; LA32-NEXT: ld.w $a2, $a1, 0
; LA32-NEXT: bge $a2, $a0, .LBB4_2
; LA32-NEXT: # %bb.1: # %test
; LA32-NEXT: ld.w $a0, $a1, 0
; LA32-NEXT: .LBB4_2: # %end
; LA32-NEXT: ret
;
; LA64-LABEL: foo_br_sge:
; LA64: # %bb.0:
; LA64-NEXT: ld.w $a2, $a1, 0
; LA64-NEXT: addi.w $a0, $a0, 0
; LA64-NEXT: bge $a2, $a0, .LBB4_2
; LA64-NEXT: # %bb.1: # %test
; LA64-NEXT: ld.w $a0, $a1, 0
; LA64-NEXT: .LBB4_2: # %end
; LA64-NEXT: ret
%val = load volatile i32, ptr %b
%cc = icmp sge i32 %val, %a
br i1 %cc, label %end, label %test
test:
%tmp = load volatile i32, ptr %b
br label %end
end:
ret void
}
define void @foo_br_ult(i32 %a, ptr %b) nounwind {
; LA32-LABEL: foo_br_ult:
; LA32: # %bb.0:
; LA32-NEXT: ld.w $a2, $a1, 0
; LA32-NEXT: bltu $a2, $a0, .LBB5_2
; LA32-NEXT: # %bb.1: # %test
; LA32-NEXT: ld.w $a0, $a1, 0
; LA32-NEXT: .LBB5_2: # %end
; LA32-NEXT: ret
;
; LA64-LABEL: foo_br_ult:
; LA64: # %bb.0:
; LA64-NEXT: ld.wu $a2, $a1, 0
; LA64-NEXT: bstrpick.d $a0, $a0, 31, 0
; LA64-NEXT: bltu $a2, $a0, .LBB5_2
; LA64-NEXT: # %bb.1: # %test
; LA64-NEXT: ld.w $a0, $a1, 0
; LA64-NEXT: .LBB5_2: # %end
; LA64-NEXT: ret
%val = load volatile i32, ptr %b
%cc = icmp ult i32 %val, %a
br i1 %cc, label %end, label %test
test:
%tmp = load volatile i32, ptr %b
br label %end
end:
ret void
}
define void @foo_br_uge(i32 %a, ptr %b) nounwind {
; LA32-LABEL: foo_br_uge:
; LA32: # %bb.0:
; LA32-NEXT: ld.w $a2, $a1, 0
; LA32-NEXT: bgeu $a2, $a0, .LBB6_2
; LA32-NEXT: # %bb.1: # %test
; LA32-NEXT: ld.w $a0, $a1, 0
; LA32-NEXT: .LBB6_2: # %end
; LA32-NEXT: ret
;
; LA64-LABEL: foo_br_uge:
; LA64: # %bb.0:
; LA64-NEXT: ld.wu $a2, $a1, 0
; LA64-NEXT: bstrpick.d $a0, $a0, 31, 0
; LA64-NEXT: bgeu $a2, $a0, .LBB6_2
; LA64-NEXT: # %bb.1: # %test
; LA64-NEXT: ld.w $a0, $a1, 0
; LA64-NEXT: .LBB6_2: # %end
; LA64-NEXT: ret
%val = load volatile i32, ptr %b
%cc = icmp uge i32 %val, %a
br i1 %cc, label %end, label %test
test:
%tmp = load volatile i32, ptr %b
br label %end
end:
ret void
}
;; Check for condition codes that don't have a matching instruction.
define void @foo_br_sgt(i32 %a, ptr %b) nounwind {
; LA32-LABEL: foo_br_sgt:
; LA32: # %bb.0:
; LA32-NEXT: ld.w $a2, $a1, 0
; LA32-NEXT: blt $a0, $a2, .LBB7_2
; LA32-NEXT: # %bb.1: # %test
; LA32-NEXT: ld.w $a0, $a1, 0
; LA32-NEXT: .LBB7_2: # %end
; LA32-NEXT: ret
;
; LA64-LABEL: foo_br_sgt:
; LA64: # %bb.0:
; LA64-NEXT: ld.w $a2, $a1, 0
; LA64-NEXT: addi.w $a0, $a0, 0
; LA64-NEXT: blt $a0, $a2, .LBB7_2
; LA64-NEXT: # %bb.1: # %test
; LA64-NEXT: ld.w $a0, $a1, 0
; LA64-NEXT: .LBB7_2: # %end
; LA64-NEXT: ret
%val = load volatile i32, ptr %b
%cc = icmp sgt i32 %val, %a
br i1 %cc, label %end, label %test
test:
%tmp = load volatile i32, ptr %b
br label %end
end:
ret void
}
define void @foo_br_sle(i32 %a, ptr %b) nounwind {
; LA32-LABEL: foo_br_sle:
; LA32: # %bb.0:
; LA32-NEXT: ld.w $a2, $a1, 0
; LA32-NEXT: bge $a0, $a2, .LBB8_2
; LA32-NEXT: # %bb.1: # %test
; LA32-NEXT: ld.w $a0, $a1, 0
; LA32-NEXT: .LBB8_2: # %end
; LA32-NEXT: ret
;
; LA64-LABEL: foo_br_sle:
; LA64: # %bb.0:
; LA64-NEXT: ld.w $a2, $a1, 0
; LA64-NEXT: addi.w $a0, $a0, 0
; LA64-NEXT: bge $a0, $a2, .LBB8_2
; LA64-NEXT: # %bb.1: # %test
; LA64-NEXT: ld.w $a0, $a1, 0
; LA64-NEXT: .LBB8_2: # %end
; LA64-NEXT: ret
%val = load volatile i32, ptr %b
%cc = icmp sle i32 %val, %a
br i1 %cc, label %end, label %test
test:
%tmp = load volatile i32, ptr %b
br label %end
end:
ret void
}
define void @foo_br_ugt(i32 %a, ptr %b) nounwind {
; LA32-LABEL: foo_br_ugt:
; LA32: # %bb.0:
; LA32-NEXT: ld.w $a2, $a1, 0
; LA32-NEXT: bltu $a0, $a2, .LBB9_2
; LA32-NEXT: # %bb.1: # %test
; LA32-NEXT: ld.w $a0, $a1, 0
; LA32-NEXT: .LBB9_2: # %end
; LA32-NEXT: ret
;
; LA64-LABEL: foo_br_ugt:
; LA64: # %bb.0:
; LA64-NEXT: ld.wu $a2, $a1, 0
; LA64-NEXT: bstrpick.d $a0, $a0, 31, 0
; LA64-NEXT: bltu $a0, $a2, .LBB9_2
; LA64-NEXT: # %bb.1: # %test
; LA64-NEXT: ld.w $a0, $a1, 0
; LA64-NEXT: .LBB9_2: # %end
; LA64-NEXT: ret
%val = load volatile i32, ptr %b
%cc = icmp ugt i32 %val, %a
br i1 %cc, label %end, label %test
test:
%tmp = load volatile i32, ptr %b
br label %end
end:
ret void
}
define void @foo_br_ule(i32 %a, ptr %b) nounwind {
; LA32-LABEL: foo_br_ule:
; LA32: # %bb.0:
; LA32-NEXT: ld.w $a2, $a1, 0
; LA32-NEXT: bgeu $a0, $a2, .LBB10_2
; LA32-NEXT: # %bb.1: # %test
; LA32-NEXT: ld.w $a0, $a1, 0
; LA32-NEXT: .LBB10_2: # %end
; LA32-NEXT: ret
;
; LA64-LABEL: foo_br_ule:
; LA64: # %bb.0:
; LA64-NEXT: ld.wu $a2, $a1, 0
; LA64-NEXT: bstrpick.d $a0, $a0, 31, 0
; LA64-NEXT: bgeu $a0, $a2, .LBB10_2
; LA64-NEXT: # %bb.1: # %test
; LA64-NEXT: ld.w $a0, $a1, 0
; LA64-NEXT: .LBB10_2: # %end
; LA64-NEXT: ret
%val = load volatile i32, ptr %b
%cc = icmp ule i32 %val, %a
br i1 %cc, label %end, label %test
test:
%tmp = load volatile i32, ptr %b
br label %end
end:
ret void
}
;; Check the case of a branch where the condition was generated in another
;; function.
define void @foo_br_cc(ptr %a, i1 %cc) nounwind {
; ALL-LABEL: foo_br_cc:
; ALL: # %bb.0:
; ALL-NEXT: ld.w $a2, $a0, 0
; ALL-NEXT: andi $a1, $a1, 1
; ALL-NEXT: bnez $a1, .LBB11_2
; ALL-NEXT: # %bb.1: # %test
; ALL-NEXT: ld.w $a0, $a0, 0
; ALL-NEXT: .LBB11_2: # %end
; ALL-NEXT: ret
%val = load volatile i32, ptr %a
br i1 %cc, label %end, label %test
test:
%tmp = load volatile i32, ptr %a
br label %end
end:
ret void
}
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