159 lines
4.1 KiB
LLVM
159 lines
4.1 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=thumbv8.1m.main %s -o - | FileCheck %s
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define void @cbz_exit(i32* %in, i32* %res) {
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; CHECK-LABEL: cbz_exit:
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; CHECK: @ %bb.0: @ %entry
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; CHECK-NEXT: subs r2, r0, #4
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; CHECK-NEXT: mov.w r0, #-1
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; CHECK-NEXT: .LBB0_1: @ %loop
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; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: ldr r3, [r2, #4]!
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; CHECK-NEXT: adds r0, #1
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; CHECK-NEXT: cbz r3, .LBB0_2
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; CHECK-NEXT: le .LBB0_1
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; CHECK-NEXT: .LBB0_2: @ %exit
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; CHECK-NEXT: str r0, [r1]
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; CHECK-NEXT: bx lr
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entry:
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br label %loop
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loop:
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%offset = phi i32 [ 0, %entry ], [ %next, %loop ]
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%ptr = getelementptr i32, i32* %in, i32 %offset
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%val = load i32, i32* %ptr
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%next = add i32 %offset, 1
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%cmp = icmp eq i32 %val, 0
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br i1 %cmp, label %exit, label %loop
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exit:
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store i32 %offset, i32* %res
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ret void
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}
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define void @cbnz_exit(i32* %in, i32* %res) {
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; CHECK-LABEL: cbnz_exit:
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; CHECK: @ %bb.0: @ %entry
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; CHECK-NEXT: subs r2, r0, #4
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; CHECK-NEXT: mov.w r0, #-1
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; CHECK-NEXT: .LBB1_1: @ %loop
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; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: ldr r3, [r2, #4]!
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; CHECK-NEXT: adds r0, #1
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; CHECK-NEXT: cbnz r3, .LBB1_2
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; CHECK-NEXT: le .LBB1_1
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; CHECK-NEXT: .LBB1_2: @ %exit
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; CHECK-NEXT: str r0, [r1]
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; CHECK-NEXT: bx lr
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entry:
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br label %loop
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loop:
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%offset = phi i32 [ 0, %entry ], [ %next, %loop ]
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%ptr = getelementptr i32, i32* %in, i32 %offset
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%val = load i32, i32* %ptr
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%next = add i32 %offset, 1
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%cmp = icmp ne i32 %val, 0
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br i1 %cmp, label %exit, label %loop
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exit:
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store i32 %offset, i32* %res
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ret void
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}
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define void @cbnz_exit_too_large(i32* %in, i32* %res) {
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; CHECK-LABEL: cbnz_exit_too_large:
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; CHECK: @ %bb.0: @ %entry
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; CHECK-NEXT: subs r2, r0, #4
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; CHECK-NEXT: mov.w r0, #-1
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; CHECK-NEXT: .LBB2_1: @ %loop
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; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: ldr r12, [r2, #4]!
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; CHECK-NEXT: .zero 4090
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; CHECK-NEXT: adds r0, #1
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; CHECK-NEXT: cmp.w r12, #0
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; CHECK-NEXT: beq.w .LBB2_1
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; CHECK-NEXT: @ %bb.2: @ %exit
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; CHECK-NEXT: str r0, [r1]
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; CHECK-NEXT: bx lr
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entry:
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br label %loop
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loop:
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%offset = phi i32 [ 0, %entry ], [ %next, %loop ]
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%ptr = getelementptr i32, i32* %in, i32 %offset
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%val = load i32, i32* %ptr
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%next = add i32 %offset, 1
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%cmp = icmp ne i32 %val, 0
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%size = call i32 @llvm.arm.space(i32 4090, i32 undef)
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br i1 %cmp, label %exit, label %loop
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exit:
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store i32 %offset, i32* %res
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ret void
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}
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define void @cbz_exit_minsize(i32* %in, i32* %res) #0 {
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; CHECK-LABEL: cbz_exit_minsize:
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; CHECK: @ %bb.0: @ %entry
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; CHECK-NEXT: movs r2, #0
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; CHECK-NEXT: .LBB3_1: @ %loop
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; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: ldr.w r3, [r0, r2, lsl #2]
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; CHECK-NEXT: adds r2, #1
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; CHECK-NEXT: cmp r3, #0
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; CHECK-NEXT: bne .LBB3_1
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; CHECK-NEXT: @ %bb.2: @ %exit
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; CHECK-NEXT: subs r0, r2, #1
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; CHECK-NEXT: str r0, [r1]
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; CHECK-NEXT: bx lr
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entry:
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br label %loop
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loop:
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%offset = phi i32 [ 0, %entry ], [ %next, %loop ]
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%ptr = getelementptr i32, i32* %in, i32 %offset
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%val = load i32, i32* %ptr
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%next = add i32 %offset, 1
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%cmp = icmp eq i32 %val, 0
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br i1 %cmp, label %exit, label %loop
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exit:
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store i32 %offset, i32* %res
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ret void
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}
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define void @cbnz_exit_minsize(i32* %in, i32* %res) #0 {
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; CHECK-LABEL: cbnz_exit_minsize:
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; CHECK: @ %bb.0: @ %entry
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; CHECK-NEXT: movs r2, #0
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; CHECK-NEXT: .LBB4_1: @ %loop
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; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: ldr.w r3, [r0, r2, lsl #2]
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; CHECK-NEXT: adds r2, #1
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; CHECK-NEXT: cmp r3, #0
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; CHECK-NEXT: beq .LBB4_1
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; CHECK-NEXT: @ %bb.2: @ %exit
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; CHECK-NEXT: subs r0, r2, #1
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; CHECK-NEXT: str r0, [r1]
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; CHECK-NEXT: bx lr
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entry:
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br label %loop
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loop:
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%offset = phi i32 [ 0, %entry ], [ %next, %loop ]
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%ptr = getelementptr i32, i32* %in, i32 %offset
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%val = load i32, i32* %ptr
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%next = add i32 %offset, 1
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%cmp = icmp ne i32 %val, 0
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br i1 %cmp, label %exit, label %loop
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exit:
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store i32 %offset, i32* %res
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ret void
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}
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attributes #0 = { minsize optsize }
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declare i32 @llvm.arm.space(i32 immarg, i32);
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