dsp-loop-indexing.ll
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; RUN: llc -mtriple=thumbv7em -mattr=+fp-armv8 %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-DEFAULT
; RUN: llc -mtriple=thumbv8m.main -mattr=+fp-armv8,+dsp %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-DEFAULT
; RUN: llc -mtriple=thumbv8m.main -mattr=+fp-armv8,+dsp -lsr-backedge-indexing=false %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=DISABLED
; RUN: llc -mtriple=thumbv8 %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=DISABLED
; RUN: llc -mtriple=thumbv8m.main -mattr=+fp-armv8,+dsp -lsr-complexity-limit=2147483647 %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-COMPLEX
; CHECK-LABEL: test_qadd_2
; CHECK: @ %loop
; CHECK-DEFAULT: ldr{{.*}}, #4]
; CHECK-DEFAULT: ldr{{.*}}, #4]
; CHECK-DEFAULT: str{{.*}}, #4]
; CHECK-DEFAULT: ldr{{.*}}, #8]!
; CHECK-DEAFULT: ldr{{.*}}, #8]!
; CHECK-DEFAULT: str{{.*}}, #8]!
; CHECK-COMPLEX: ldr{{.*}}, #8]!
; CHECK-COMPLEX: ldr{{.*}}, #8]!
; CHECK-COMPLEX: str{{.*}}, #8]!
; CHECK-COMPLEX: ldr{{.*}}, #4]
; CHECK-COMPLEX: ldr{{.*}}, #4]
; CHECK-COMPLEX: str{{.*}}, #4]
; DISABLED-NOT: ldr{{.*}}]!
; DISABLED-NOT: str{{.*}}]!
define void @test_qadd_2(i32* %a.array, i32* %b.array, i32* %out.array, i32 %N) {
entry:
br label %loop
loop:
%i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
%idx.1 = phi i32 [ 0, %entry ], [ %idx.next, %loop ]
%gep.a.1 = getelementptr inbounds i32, i32* %a.array, i32 %idx.1
%a.1 = load i32, i32* %gep.a.1
%gep.b.1 = getelementptr inbounds i32, i32* %b.array, i32 %idx.1
%b.1 = load i32, i32* %gep.b.1
%qadd.1 = call i32 @llvm.arm.qadd(i32 %a.1, i32 %b.1)
%addr.1 = getelementptr inbounds i32, i32* %out.array, i32 %idx.1
store i32 %qadd.1, i32* %addr.1
%idx.2 = or i32 %idx.1, 1
%gep.a.2 = getelementptr inbounds i32, i32* %a.array, i32 %idx.2
%a.2 = load i32, i32* %gep.a.2
%gep.b.2 = getelementptr inbounds i32, i32* %b.array, i32 %idx.2
%b.2 = load i32, i32* %gep.b.2
%qadd.2 = call i32 @llvm.arm.qadd(i32 %a.2, i32 %b.2)
%addr.2 = getelementptr inbounds i32, i32* %out.array, i32 %idx.2
store i32 %qadd.2, i32* %addr.2
%i.next = add nsw nuw i32 %i, -2
%idx.next = add nsw nuw i32 %idx.1, 2
%cmp = icmp ult i32 %i.next, %N
br i1 %cmp, label %loop, label %exit
exit:
ret void
}
; CHECK-LABEL: test_qadd_2_backwards
; TODO: Indexes should be generated.
; CHECK: @ %loop
; CHECK-DEFAULT: ldr{{.*}},
; CHECK-DEFAULT: ldr{{.*}},
; CHECK-DEFAULT: str{{.*}},
; CHECK-DEFAULT: ldr{{.*}}, #-4]
; CHECK-DEFAULT: ldr{{.*}}, #-4]
; CHECK-DEFAULT: sub{{.*}}, #8
; CHECK-DEFAULT: str{{.*}}, #-4]
; CHECK-DEFAULT: sub{{.*}}, #8
; CHECK-COMPLEX: ldr{{.*}} lsl #2]
; CHECK-COMPLEX: ldr{{.*}} lsl #2]
; CHECK-COMPLEX: str{{.*}} lsl #2]
; CHECK-COMPLEX: ldr{{.*}} lsl #2]
; CHECK-COMPLEX: ldr{{.*}} lsl #2]
; CHECK-COMPLEX: str{{.*}} lsl #2]
; DISABLED-NOT: ldr{{.*}}]!
; DISABLED-NOT: str{{.*}}]!
define void @test_qadd_2_backwards(i32* %a.array, i32* %b.array, i32* %out.array, i32 %N) {
entry:
br label %loop
loop:
%i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
%idx.1 = phi i32 [ %N, %entry ], [ %idx.next, %loop ]
%gep.a.1 = getelementptr inbounds i32, i32* %a.array, i32 %idx.1
%a.1 = load i32, i32* %gep.a.1
%gep.b.1 = getelementptr inbounds i32, i32* %b.array, i32 %idx.1
%b.1 = load i32, i32* %gep.b.1
%qadd.1 = call i32 @llvm.arm.qadd(i32 %a.1, i32 %b.1)
%addr.1 = getelementptr inbounds i32, i32* %out.array, i32 %idx.1
store i32 %qadd.1, i32* %addr.1
%idx.2 = sub nsw nuw i32 %idx.1, 1
%gep.a.2 = getelementptr inbounds i32, i32* %a.array, i32 %idx.2
%a.2 = load i32, i32* %gep.a.2
%gep.b.2 = getelementptr inbounds i32, i32* %b.array, i32 %idx.2
%b.2 = load i32, i32* %gep.b.2
%qadd.2 = call i32 @llvm.arm.qadd(i32 %a.2, i32 %b.2)
%addr.2 = getelementptr inbounds i32, i32* %out.array, i32 %idx.2
store i32 %qadd.2, i32* %addr.2
%i.next = add nsw nuw i32 %i, -2
%idx.next = sub nsw nuw i32 %idx.1, 2
%cmp = icmp ult i32 %i.next, %N
br i1 %cmp, label %loop, label %exit
exit:
ret void
}
; CHECK-LABEL: test_qadd_3
; CHECK: @ %loop
; CHECK-DEFAULT: ldr{{.*}}, #8]
; CHECK-DEFAULT: ldr{{.*}}, #8]
; CHECK-DEFAULT: str{{.*}}, #8]
; CHECK-DEFAULT: ldr{{.*}}, #12]!
; CHECK-DEFAULT: ldr{{.*}}, #12]!
; CHECK-DEFAULT: str{{.*}}, #12]!
; CHECK-COMPLEX: ldr{{.*}}, #12]!
; CHECK-COMPLEX: ldr{{.*}}, #12]!
; CHECK-COMPLEX: str{{.*}}, #12]!
; CHECK-COMPLEX: ldr{{.*}}, #4]
; CHECK-COMPLEX: ldr{{.*}}, #4]
; CHECK-COMPLEX: str{{.*}}, #4]
; CHECK-COMPLEX: ldr{{.*}}, #8]
; CHECK-COMPLEX: ldr{{.*}}, #8]
; CHECK-COMPLEX: str{{.*}}, #8]
; DISABLED-NOT: ldr{{.*}}]!
; DISABLED-NOT: str{{.*}}]!
define void @test_qadd_3(i32* %a.array, i32* %b.array, i32* %out.array, i32 %N) {
entry:
br label %loop
loop:
%i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
%idx.1 = phi i32 [ 0, %entry ], [ %idx.next, %loop ]
%gep.a.1 = getelementptr inbounds i32, i32* %a.array, i32 %idx.1
%a.1 = load i32, i32* %gep.a.1
%gep.b.1 = getelementptr inbounds i32, i32* %b.array, i32 %idx.1
%b.1 = load i32, i32* %gep.b.1
%qadd.1 = call i32 @llvm.arm.qadd(i32 %a.1, i32 %b.1)
%addr.1 = getelementptr inbounds i32, i32* %out.array, i32 %idx.1
store i32 %qadd.1, i32* %addr.1
%idx.2 = add nuw nsw i32 %idx.1, 1
%gep.a.2 = getelementptr inbounds i32, i32* %a.array, i32 %idx.2
%a.2 = load i32, i32* %gep.a.2
%gep.b.2 = getelementptr inbounds i32, i32* %b.array, i32 %idx.2
%b.2 = load i32, i32* %gep.b.2
%qadd.2 = call i32 @llvm.arm.qadd(i32 %a.2, i32 %b.2)
%addr.2 = getelementptr inbounds i32, i32* %out.array, i32 %idx.2
store i32 %qadd.2, i32* %addr.2
%idx.3 = add nuw nsw i32 %idx.1, 2
%gep.a.3 = getelementptr inbounds i32, i32* %a.array, i32 %idx.3
%a.3 = load i32, i32* %gep.a.3
%gep.b.3 = getelementptr inbounds i32, i32* %b.array, i32 %idx.3
%b.3 = load i32, i32* %gep.b.3
%qadd.3 = call i32 @llvm.arm.qadd(i32 %a.3, i32 %b.3)
%addr.3 = getelementptr inbounds i32, i32* %out.array, i32 %idx.3
store i32 %qadd.3, i32* %addr.3
%i.next = add nsw nuw i32 %i, -3
%idx.next = add nsw nuw i32 %idx.1, 3
%cmp = icmp ult i32 %i.next, %N
br i1 %cmp, label %loop, label %exit
exit:
ret void
}
; CHECK-LABEL: test_qadd_4
; CHECK: @ %loop
; TODO: pre-inc store
; CHECK-DEFAULT: ldr{{.*}}, #4]
; CHECK-DEFAULT: ldr{{.*}}, #4]
; CHECK-DEFAULT: str{{.*}}, #4]
; CHECK-DEFAULT: ldr{{.*}}, #8]
; CHECK-DEFAULT: ldr{{.*}}, #8]
; CHECK-DEFAULT: str{{.*}}, #8]
; CHECK-DEFAULT: ldr{{.*}}, #12]
; CHECK-DEFAULT: ldr{{.*}}, #12]
; CHECK-DEFAULT: str{{.*}}, #12]
; CHECK-COMPLEX: ldr{{.*}}, #16]!
; CHECK-COMPLEX: ldr{{.*}}, #16]!
; CHECK-COMPLEX: str{{.*}}, #16]!
; CHECK-COMPLEX: ldr{{.*}}, #4]
; CHECK-COMPLEX: ldr{{.*}}, #4]
; CHECK-COMPLEX: str{{.*}}, #4]
; CHECK-COMPLEX: ldr{{.*}}, #8]
; CHECK-COMPLEX: ldr{{.*}}, #8]
; CHECK-COMPLEX: str{{.*}}, #8]
; CHECK-COMPLEX: ldr{{.*}}, #12]
; CHECK-COMPLEX: ldr{{.*}}, #12]
; CHECK-COMPLEX: str{{.*}}, #12]
; DISABLED-NOT: ldr{{.*}}]!
; DISABLED-NOT: str{{.*}}]!
define void @test_qadd_4(i32* %a.array, i32* %b.array, i32* %out.array, i32 %N) {
entry:
br label %loop
loop:
%i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
%idx.1 = phi i32 [ 0, %entry ], [ %idx.next, %loop ]
%gep.a.1 = getelementptr inbounds i32, i32* %a.array, i32 %idx.1
%a.1 = load i32, i32* %gep.a.1
%gep.b.1 = getelementptr inbounds i32, i32* %b.array, i32 %idx.1
%b.1 = load i32, i32* %gep.b.1
%qadd.1 = call i32 @llvm.arm.qadd(i32 %a.1, i32 %b.1)
%addr.1 = getelementptr inbounds i32, i32* %out.array, i32 %idx.1
store i32 %qadd.1, i32* %addr.1
%idx.2 = or i32 %idx.1, 1
%gep.a.2 = getelementptr inbounds i32, i32* %a.array, i32 %idx.2
%a.2 = load i32, i32* %gep.a.2
%gep.b.2 = getelementptr inbounds i32, i32* %b.array, i32 %idx.2
%b.2 = load i32, i32* %gep.b.2
%qadd.2 = call i32 @llvm.arm.qadd(i32 %a.2, i32 %b.2)
%addr.2 = getelementptr inbounds i32, i32* %out.array, i32 %idx.2
store i32 %qadd.2, i32* %addr.2
%idx.3 = or i32 %idx.1, 2
%gep.a.3 = getelementptr inbounds i32, i32* %a.array, i32 %idx.3
%a.3 = load i32, i32* %gep.a.3
%gep.b.3 = getelementptr inbounds i32, i32* %b.array, i32 %idx.3
%b.3 = load i32, i32* %gep.b.3
%qadd.3 = call i32 @llvm.arm.qadd(i32 %a.3, i32 %b.3)
%addr.3 = getelementptr inbounds i32, i32* %out.array, i32 %idx.3
store i32 %qadd.3, i32* %addr.3
%idx.4 = or i32 %idx.1, 3
%gep.a.4 = getelementptr inbounds i32, i32* %a.array, i32 %idx.4
%a.4 = load i32, i32* %gep.a.4
%gep.b.4 = getelementptr inbounds i32, i32* %b.array, i32 %idx.4
%b.4 = load i32, i32* %gep.b.4
%qadd.4 = call i32 @llvm.arm.qadd(i32 %a.4, i32 %b.4)
%addr.4 = getelementptr inbounds i32, i32* %out.array, i32 %idx.4
store i32 %qadd.4, i32* %addr.4
%i.next = add nsw nuw i32 %i, -4
%idx.next = add nsw nuw i32 %idx.1, 4
%cmp = icmp ult i32 %i.next, %N
br i1 %cmp, label %loop, label %exit
exit:
ret void
}
; CHECK-LABEL: test_qadd16_2
; CHECK: @ %loop
; TODO: pre-inc store.
; CHECK-DEFAULT: ldr{{.*}}, #4]
; CHECK-DEFAULT: ldr{{.*}}, #4]
; CHECK-DEFAULT: str{{.*}}, #8]
; CHECK-DEFAULT: ldr{{.*}}, #8]!
; CHECK-DEFAULT: ldr{{.*}}, #8]!
; CHECK-DEFAULT: str{{.*}}, #16]!
; CHECK-COMPLEX: ldr{{.*}}, #8]!
; CHECK-COMPLEX: ldr{{.*}}, #8]!
; CHECK-COMPLEX: str{{.*}}, #16]!
; CHECK-COMPLEX: ldr{{.*}}, #4]
; CHECK-COMPLEX: ldr{{.*}}, #4]
; CHECK-COMPLEX: str{{.*}}, #8]
; DISABLED-NOT: ldr{{.*}}]!
; DISABLED-NOT: str{{.*}}]!
define void @test_qadd16_2(i16* %a.array, i16* %b.array, i32* %out.array, i32 %N) {
entry:
br label %loop
loop:
%i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
%idx.1 = phi i32 [ 0, %entry ], [ %idx.next, %loop ]
%gep.a.1 = getelementptr inbounds i16, i16* %a.array, i32 %idx.1
%cast.a.1 = bitcast i16* %gep.a.1 to i32*
%a.1 = load i32, i32* %cast.a.1
%gep.b.1 = getelementptr inbounds i16, i16* %b.array, i32 %idx.1
%cast.b.1 = bitcast i16* %gep.b.1 to i32*
%b.1 = load i32, i32* %cast.b.1
%qadd.1 = call i32 @llvm.arm.qadd16(i32 %a.1, i32 %b.1)
%addr.1 = getelementptr inbounds i32, i32* %out.array, i32 %idx.1
store i32 %qadd.1, i32* %addr.1
%idx.2 = add nsw nuw i32 %idx.1, 2
%gep.a.2 = getelementptr inbounds i16, i16* %a.array, i32 %idx.2
%cast.a.2 = bitcast i16* %gep.a.2 to i32*
%a.2 = load i32, i32* %cast.a.2
%gep.b.2 = getelementptr inbounds i16, i16* %b.array, i32 %idx.2
%cast.b.2 = bitcast i16* %gep.b.2 to i32*
%b.2 = load i32, i32* %cast.b.2
%qadd.2 = call i32 @llvm.arm.qadd16(i32 %a.2, i32 %b.2)
%addr.2 = getelementptr inbounds i32, i32* %out.array, i32 %idx.2
store i32 %qadd.2, i32* %addr.2
%i.next = add nsw nuw i32 %i, -2
%idx.next = add nsw nuw i32 %idx.1, 4
%cmp = icmp ult i32 %i.next, %N
br i1 %cmp, label %loop, label %exit
exit:
ret void
}
declare i32 @llvm.arm.qadd(i32, i32)
declare i32 @llvm.arm.qadd16(i32, i32)