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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple thumbv6m-none-eabi -o - %s | FileCheck %s --check-prefix=CHECK-V6M
; RUN: llc -mtriple thumbv7m-none-eabi -o - %s | FileCheck %s --check-prefix=CHECK-V7M
; RUN: llc -mtriple thumbv8.1m.main-none-eabi -mattr=+mve,+lob -o - %s | FileCheck %s --check-prefix=CHECK-V81M
; RUN: llc -mtriple armv7a-none-eabi -o - %s | FileCheck %s --check-prefix=CHECK-V7A
define i32 @test_lshr(i32* nocapture %x, i32* nocapture readonly %y, i32 %n) {
; CHECK-V6M-LABEL: test_lshr:
; CHECK-V6M: @ %bb.0: @ %entry
; CHECK-V6M-NEXT: lsrs r2, r2, #2
; CHECK-V6M-NEXT: beq .LBB0_2
; CHECK-V6M-NEXT: .LBB0_1: @ %while.body
; CHECK-V6M-NEXT: @ =>This Inner Loop Header: Depth=1
; CHECK-V6M-NEXT: ldm r1!, {r3}
; CHECK-V6M-NEXT: lsls r3, r3, #1
; CHECK-V6M-NEXT: stm r0!, {r3}
; CHECK-V6M-NEXT: subs r2, r2, #1
; CHECK-V6M-NEXT: bne .LBB0_1
; CHECK-V6M-NEXT: .LBB0_2: @ %while.end
; CHECK-V6M-NEXT: movs r0, #0
; CHECK-V6M-NEXT: bx lr
;
; CHECK-V7M-LABEL: test_lshr:
; CHECK-V7M: @ %bb.0: @ %entry
; CHECK-V7M-NEXT: lsrs r2, r2, #2
; CHECK-V7M-NEXT: beq .LBB0_3
; CHECK-V7M-NEXT: @ %bb.1: @ %while.body.preheader
; CHECK-V7M-NEXT: subs r1, #4
; CHECK-V7M-NEXT: subs r0, #4
; CHECK-V7M-NEXT: .LBB0_2: @ %while.body
; CHECK-V7M-NEXT: @ =>This Inner Loop Header: Depth=1
; CHECK-V7M-NEXT: ldr r3, [r1, #4]!
; CHECK-V7M-NEXT: subs r2, #1
; CHECK-V7M-NEXT: lsl.w r3, r3, #1
; CHECK-V7M-NEXT: str r3, [r0, #4]!
; CHECK-V7M-NEXT: bne .LBB0_2
; CHECK-V7M-NEXT: .LBB0_3: @ %while.end
; CHECK-V7M-NEXT: movs r0, #0
; CHECK-V7M-NEXT: bx lr
;
; CHECK-V81M-LABEL: test_lshr:
; CHECK-V81M: @ %bb.0: @ %entry
; CHECK-V81M-NEXT: .save {r7, lr}
; CHECK-V81M-NEXT: push {r7, lr}
; CHECK-V81M-NEXT: lsrs r2, r2, #2
; CHECK-V81M-NEXT: wls lr, r2, .LBB0_2
; CHECK-V81M-NEXT: .LBB0_1: @ %while.body
; CHECK-V81M-NEXT: @ =>This Inner Loop Header: Depth=1
; CHECK-V81M-NEXT: ldr r2, [r1], #4
; CHECK-V81M-NEXT: lsls r2, r2, #1
; CHECK-V81M-NEXT: str r2, [r0], #4
; CHECK-V81M-NEXT: le lr, .LBB0_1
; CHECK-V81M-NEXT: .LBB0_2: @ %while.end
; CHECK-V81M-NEXT: movs r0, #0
; CHECK-V81M-NEXT: pop {r7, pc}
;
; CHECK-V7A-LABEL: test_lshr:
; CHECK-V7A: @ %bb.0: @ %entry
; CHECK-V7A-NEXT: mov r3, #0
; CHECK-V7A-NEXT: cmp r3, r2, lsr #2
; CHECK-V7A-NEXT: beq .LBB0_3
; CHECK-V7A-NEXT: @ %bb.1: @ %while.body.preheader
; CHECK-V7A-NEXT: lsr r2, r2, #2
; CHECK-V7A-NEXT: .LBB0_2: @ %while.body
; CHECK-V7A-NEXT: @ =>This Inner Loop Header: Depth=1
; CHECK-V7A-NEXT: ldr r3, [r1], #4
; CHECK-V7A-NEXT: subs r2, r2, #1
; CHECK-V7A-NEXT: lsl r3, r3, #1
; CHECK-V7A-NEXT: str r3, [r0], #4
; CHECK-V7A-NEXT: bne .LBB0_2
; CHECK-V7A-NEXT: .LBB0_3: @ %while.end
; CHECK-V7A-NEXT: mov r0, #0
; CHECK-V7A-NEXT: bx lr
entry:
%shr = lshr i32 %n, 2
%tobool.not4 = icmp eq i32 %shr, 0
br i1 %tobool.not4, label %while.end, label %while.body
while.body: ; preds = %entry, %while.body
%c.07 = phi i32 [ %dec, %while.body ], [ %shr, %entry ]
%x.addr.06 = phi i32* [ %incdec.ptr1, %while.body ], [ %x, %entry ]
%y.addr.05 = phi i32* [ %incdec.ptr, %while.body ], [ %y, %entry ]
%incdec.ptr = getelementptr inbounds i32, i32* %y.addr.05, i32 1
%0 = load i32, i32* %y.addr.05, align 4
%mul = shl nsw i32 %0, 1
%incdec.ptr1 = getelementptr inbounds i32, i32* %x.addr.06, i32 1
store i32 %mul, i32* %x.addr.06, align 4
%dec = add nsw i32 %c.07, -1
%tobool.not = icmp eq i32 %dec, 0
br i1 %tobool.not, label %while.end, label %while.body
while.end: ; preds = %while.body, %entry
ret i32 0
}
define i32 @test_lshr2(i32* nocapture %x, i32* nocapture readonly %y, i32 %n) {
; CHECK-V6M-LABEL: test_lshr2:
; CHECK-V6M: @ %bb.0: @ %entry
; CHECK-V6M-NEXT: lsrs r2, r2, #2
; CHECK-V6M-NEXT: beq .LBB1_2
; CHECK-V6M-NEXT: .LBB1_1: @ %while.body
; CHECK-V6M-NEXT: @ =>This Inner Loop Header: Depth=1
; CHECK-V6M-NEXT: ldm r1!, {r3}
; CHECK-V6M-NEXT: lsls r3, r3, #1
; CHECK-V6M-NEXT: stm r0!, {r3}
; CHECK-V6M-NEXT: subs r2, r2, #1
; CHECK-V6M-NEXT: bne .LBB1_1
; CHECK-V6M-NEXT: .LBB1_2: @ %while.end
; CHECK-V6M-NEXT: movs r0, #0
; CHECK-V6M-NEXT: bx lr
;
; CHECK-V7M-LABEL: test_lshr2:
; CHECK-V7M: @ %bb.0: @ %entry
; CHECK-V7M-NEXT: lsrs r2, r2, #2
; CHECK-V7M-NEXT: beq .LBB1_3
; CHECK-V7M-NEXT: @ %bb.1: @ %while.body.preheader
; CHECK-V7M-NEXT: subs r1, #4
; CHECK-V7M-NEXT: subs r0, #4
; CHECK-V7M-NEXT: .LBB1_2: @ %while.body
; CHECK-V7M-NEXT: @ =>This Inner Loop Header: Depth=1
; CHECK-V7M-NEXT: ldr r3, [r1, #4]!
; CHECK-V7M-NEXT: subs r2, #1
; CHECK-V7M-NEXT: lsl.w r3, r3, #1
; CHECK-V7M-NEXT: str r3, [r0, #4]!
; CHECK-V7M-NEXT: bne .LBB1_2
; CHECK-V7M-NEXT: .LBB1_3: @ %while.end
; CHECK-V7M-NEXT: movs r0, #0
; CHECK-V7M-NEXT: bx lr
;
; CHECK-V81M-LABEL: test_lshr2:
; CHECK-V81M: @ %bb.0: @ %entry
; CHECK-V81M-NEXT: .save {r7, lr}
; CHECK-V81M-NEXT: push {r7, lr}
; CHECK-V81M-NEXT: lsrs r2, r2, #2
; CHECK-V81M-NEXT: wls lr, r2, .LBB1_2
; CHECK-V81M-NEXT: .LBB1_1: @ %while.body
; CHECK-V81M-NEXT: @ =>This Inner Loop Header: Depth=1
; CHECK-V81M-NEXT: ldr r2, [r1], #4
; CHECK-V81M-NEXT: lsls r2, r2, #1
; CHECK-V81M-NEXT: str r2, [r0], #4
; CHECK-V81M-NEXT: le lr, .LBB1_1
; CHECK-V81M-NEXT: .LBB1_2: @ %while.end
; CHECK-V81M-NEXT: movs r0, #0
; CHECK-V81M-NEXT: pop {r7, pc}
;
; CHECK-V7A-LABEL: test_lshr2:
; CHECK-V7A: @ %bb.0: @ %entry
; CHECK-V7A-NEXT: mov r3, #0
; CHECK-V7A-NEXT: cmp r3, r2, lsr #2
; CHECK-V7A-NEXT: beq .LBB1_3
; CHECK-V7A-NEXT: @ %bb.1: @ %while.body.preheader
; CHECK-V7A-NEXT: lsr r2, r2, #2
; CHECK-V7A-NEXT: .LBB1_2: @ %while.body
; CHECK-V7A-NEXT: @ =>This Inner Loop Header: Depth=1
; CHECK-V7A-NEXT: ldr r3, [r1], #4
; CHECK-V7A-NEXT: subs r2, r2, #1
; CHECK-V7A-NEXT: lsl r3, r3, #1
; CHECK-V7A-NEXT: str r3, [r0], #4
; CHECK-V7A-NEXT: bne .LBB1_2
; CHECK-V7A-NEXT: .LBB1_3: @ %while.end
; CHECK-V7A-NEXT: mov r0, #0
; CHECK-V7A-NEXT: bx lr
entry:
%tobool.not4 = icmp ult i32 %n, 4
br i1 %tobool.not4, label %while.end, label %while.body.preheader
while.body.preheader: ; preds = %entry
%shr = lshr i32 %n, 2
br label %while.body
while.body: ; preds = %while.body.preheader, %while.body
%c.07 = phi i32 [ %dec, %while.body ], [ %shr, %while.body.preheader ]
%x.addr.06 = phi i32* [ %incdec.ptr1, %while.body ], [ %x, %while.body.preheader ]
%y.addr.05 = phi i32* [ %incdec.ptr, %while.body ], [ %y, %while.body.preheader ]
%incdec.ptr = getelementptr inbounds i32, i32* %y.addr.05, i32 1
%0 = load i32, i32* %y.addr.05, align 4
%mul = shl nsw i32 %0, 1
%incdec.ptr1 = getelementptr inbounds i32, i32* %x.addr.06, i32 1
store i32 %mul, i32* %x.addr.06, align 4
%dec = add nsw i32 %c.07, -1
%tobool.not = icmp eq i32 %dec, 0
br i1 %tobool.not, label %while.end, label %while.body
while.end: ; preds = %while.body, %entry
ret i32 0
}
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