; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-apple-macosx | FileCheck %s
define i32 @test_01(ptr %p, i64 %len, i32 %x) {
; CHECK-LABEL: test_01:
; CHECK: ## %bb.0: ## %entry
; CHECK-NEXT: .p2align 4
; CHECK-NEXT: LBB0_1: ## %loop
; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1
; CHECK-NEXT: subq $1, %rsi
; CHECK-NEXT: jb LBB0_4
; CHECK-NEXT: ## %bb.2: ## %backedge
; CHECK-NEXT: ## in Loop: Header=BB0_1 Depth=1
; CHECK-NEXT: cmpl %edx, (%rdi,%rsi,4)
; CHECK-NEXT: jne LBB0_1
; CHECK-NEXT: ## %bb.3: ## %failure
; CHECK-NEXT: ud2
; CHECK-NEXT: LBB0_4: ## %exit
; CHECK-NEXT: movl $-1, %eax
; CHECK-NEXT: retq
entry:
br label %loop
loop: ; preds = %backedge, %entry
%iv = phi i64 [ %iv.next, %backedge ], [ %len, %entry ]
%iv.next = add nsw i64 %iv, -1
%cond_1 = icmp eq i64 %iv, 0
br i1 %cond_1, label %exit, label %backedge
backedge: ; preds = %loop
%addr = getelementptr inbounds i32, ptr %p, i64 %iv.next
%loaded = load atomic i32, ptr %addr unordered, align 4
%cond_2 = icmp eq i32 %loaded, %x
br i1 %cond_2, label %failure, label %loop
exit: ; preds = %loop
ret i32 -1
failure: ; preds = %backedge
unreachable
}
; Similar to test_01, but we use offsetted pointer as base.
define i32 @test_01a(ptr %p, i64 %len, i32 %x) {
; CHECK-LABEL: test_01a:
; CHECK: ## %bb.0: ## %entry
; CHECK-NEXT: .p2align 4
; CHECK-NEXT: LBB1_1: ## %loop
; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1
; CHECK-NEXT: subq $1, %rsi
; CHECK-NEXT: jb LBB1_4
; CHECK-NEXT: ## %bb.2: ## %backedge
; CHECK-NEXT: ## in Loop: Header=BB1_1 Depth=1
; CHECK-NEXT: cmpl %edx, -24(%rdi,%rsi,4)
; CHECK-NEXT: jne LBB1_1
; CHECK-NEXT: ## %bb.3: ## %failure
; CHECK-NEXT: ud2
; CHECK-NEXT: LBB1_4: ## %exit
; CHECK-NEXT: movl $-1, %eax
; CHECK-NEXT: retq
entry:
%base = getelementptr inbounds i32, ptr %p, i64 -6
br label %loop
loop: ; preds = %backedge, %entry
%iv = phi i64 [ %iv.next, %backedge ], [ %len, %entry ]
%iv.next = add nsw i64 %iv, -1
%cond_1 = icmp eq i64 %iv, 0
br i1 %cond_1, label %exit, label %backedge
backedge: ; preds = %loop
%addr = getelementptr inbounds i32, ptr %base, i64 %iv.next
%loaded = load atomic i32, ptr %addr unordered, align 4
%cond_2 = icmp eq i32 %loaded, %x
br i1 %cond_2, label %failure, label %loop
exit: ; preds = %loop
ret i32 -1
failure: ; preds = %backedge
unreachable
}
define i32 @test_02(ptr %p, i64 %len, i32 %x) {
; CHECK-LABEL: test_02:
; CHECK: ## %bb.0: ## %entry
; CHECK-NEXT: .p2align 4
; CHECK-NEXT: LBB2_1: ## %loop
; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1
; CHECK-NEXT: subq $1, %rsi
; CHECK-NEXT: jb LBB2_4
; CHECK-NEXT: ## %bb.2: ## %backedge
; CHECK-NEXT: ## in Loop: Header=BB2_1 Depth=1
; CHECK-NEXT: cmpl %edx, (%rdi,%rsi,4)
; CHECK-NEXT: jne LBB2_1
; CHECK-NEXT: ## %bb.3: ## %failure
; CHECK-NEXT: ud2
; CHECK-NEXT: LBB2_4: ## %exit
; CHECK-NEXT: movl $-1, %eax
; CHECK-NEXT: retq
entry:
%start = add i64 %len, -1
br label %loop
loop: ; preds = %backedge, %entry
%iv = phi i64 [ %iv.next, %backedge ], [ %start, %entry ]
%iv.next = add nsw i64 %iv, -1
%iv.offset = add i64 %iv, 1
%iv.next.offset = add i64 %iv.next, 1
%cond_1 = icmp eq i64 %iv.offset, 0
br i1 %cond_1, label %exit, label %backedge
backedge: ; preds = %loop
%addr = getelementptr inbounds i32, ptr %p, i64 %iv.next.offset
%loaded = load atomic i32, ptr %addr unordered, align 4
%cond_2 = icmp eq i32 %loaded, %x
br i1 %cond_2, label %failure, label %loop
exit: ; preds = %loop
ret i32 -1
failure: ; preds = %backedge
unreachable
}
define i32 @test_03(ptr %p, i64 %len, i32 %x) {
; CHECK-LABEL: test_03:
; CHECK: ## %bb.0: ## %entry
; CHECK-NEXT: .p2align 4
; CHECK-NEXT: LBB3_1: ## %loop
; CHECK-NEXT: ## =>This Inner Loop Header: Depth=1
; CHECK-NEXT: subq $1, %rsi
; CHECK-NEXT: jb LBB3_4
; CHECK-NEXT: ## %bb.2: ## %backedge
; CHECK-NEXT: ## in Loop: Header=BB3_1 Depth=1
; CHECK-NEXT: cmpl %edx, (%rdi,%rsi,4)
; CHECK-NEXT: jne LBB3_1
; CHECK-NEXT: ## %bb.3: ## %failure
; CHECK-NEXT: ud2
; CHECK-NEXT: LBB3_4: ## %exit
; CHECK-NEXT: movl $-1, %eax
; CHECK-NEXT: retq
entry:
%start = add i64 %len, -100
br label %loop
loop: ; preds = %backedge, %entry
%iv = phi i64 [ %iv.next, %backedge ], [ %start, %entry ]
%iv.next = add nsw i64 %iv, -1
%iv.offset = add i64 %iv, 100
%iv.next.offset = add i64 %iv.next, 100
%cond_1 = icmp eq i64 %iv.offset, 0
br i1 %cond_1, label %exit, label %backedge
backedge: ; preds = %loop
%addr = getelementptr inbounds i32, ptr %p, i64 %iv.next.offset
%loaded = load atomic i32, ptr %addr unordered, align 4
%cond_2 = icmp eq i32 %loaded, %x
br i1 %cond_2, label %failure, label %loop
exit: ; preds = %loop
ret i32 -1
failure: ; preds = %backedge
unreachable
}
define void @test_04() {
; CHECK-LABEL: test_04:
; CHECK: ## %bb.0: ## %bb
; CHECK-NEXT: ud2
bb:
br label %bb1
bb1: ; preds = %bb10, %bb
%tmp = phi i64 [ 1, %bb ], [ %tmp2, %bb10 ]
%tmp2 = add nuw nsw i64 %tmp, 1
br i1 undef, label %bb21, label %bb7
bb7: ; preds = %bb1
%tmp8 = add nsw i64 %tmp, -1
%tmp9 = getelementptr inbounds i32, ptr addrspace(1) undef, i64 %tmp8
store atomic i32 undef, ptr addrspace(1) %tmp9 unordered, align 4
br label %bb11
bb10: ; preds = %bb16
br label %bb1
bb11: ; preds = %bb16, %bb7
switch i32 undef, label %bb19 [
i32 0, label %bb17
i32 1, label %bb16
i32 2, label %bb15
i32 3, label %bb14
i32 4, label %bb12
]
bb12: ; preds = %bb11
unreachable
bb14: ; preds = %bb11
unreachable
bb15: ; preds = %bb11
unreachable
bb16: ; preds = %bb11
br i1 undef, label %bb10, label %bb11
bb17: ; preds = %bb11
unreachable
bb19: ; preds = %bb11
unreachable
bb21: ; preds = %bb1
unreachable
}
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