| ; 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(i32* %p, i64 %len, i32 %x) { |
| ; CHECK-LABEL: test_01: |
| ; CHECK: ## %bb.0: ## %entry |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; 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, i32* %p, i64 %iv.next |
| %loaded = load atomic i32, i32* %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(i32* %p, i64 %len, i32 %x) { |
| ; CHECK-LABEL: test_01a: |
| ; CHECK: ## %bb.0: ## %entry |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; 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, i32* %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, i32* %base, i64 %iv.next |
| %loaded = load atomic i32, i32* %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(i32* %p, i64 %len, i32 %x) { |
| ; CHECK-LABEL: test_02: |
| ; CHECK: ## %bb.0: ## %entry |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; 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, i32* %p, i64 %iv.next.offset |
| %loaded = load atomic i32, i32* %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(i32* %p, i64 %len, i32 %x) { |
| ; CHECK-LABEL: test_03: |
| ; CHECK: ## %bb.0: ## %entry |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; 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, i32* %p, i64 %iv.next.offset |
| %loaded = load atomic i32, i32* %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 |
| %tmp6 = bitcast i8 addrspace(1)* undef to i32 addrspace(1)* |
| br i1 undef, label %bb21, label %bb7 |
| |
| bb7: ; preds = %bb1 |
| %tmp8 = add nsw i64 %tmp, -1 |
| %tmp9 = getelementptr inbounds i32, i32 addrspace(1)* %tmp6, i64 %tmp8 |
| store atomic i32 undef, i32 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 |
| } |