[llvm] r278841 - [BranchFolding] Change a test case of r278575.
Hans Wennborg via llvm-commits
llvm-commits at lists.llvm.org
Tue Aug 16 17:23:25 PDT 2016
Thanks! I've merged this to 3.9 in r278874.
On Tue, Aug 16, 2016 at 1:06 PM, Haicheng Wu via llvm-commits
<llvm-commits at lists.llvm.org> wrote:
> Author: haicheng
> Date: Tue Aug 16 15:06:25 2016
> New Revision: 278841
>
> URL: http://llvm.org/viewvc/llvm-project?rev=278841&view=rev
> Log:
> [BranchFolding] Change a test case of r278575.
>
> Rename the operands to make the test less brittle.
>
> Modified:
> llvm/trunk/test/CodeGen/X86/tail-merge-after-mbp.ll
>
> Modified: llvm/trunk/test/CodeGen/X86/tail-merge-after-mbp.ll
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/tail-merge-after-mbp.ll?rev=278841&r1=278840&r2=278841&view=diff
> ==============================================================================
> --- llvm/trunk/test/CodeGen/X86/tail-merge-after-mbp.ll (original)
> +++ llvm/trunk/test/CodeGen/X86/tail-merge-after-mbp.ll Tue Aug 16 15:06:25 2016
> @@ -9,84 +9,86 @@
> declare i32 @Up(...)
> declare i32 @f(i32, i32)
>
> -; check loop block BB#10 is not merged with LBB0_12
> -; check loop block LBB0_9 is not merged with BB#11, BB#13
> +; check loop block_14 is not merged with block_21
> +; check loop block_11 is not merged with block_18, block_25
> define i32 @foo(%0* nocapture readonly, i32, i1 %c, i8* %p1, %2** %p2) {
> ; CHECK-LABEL: foo:
> -; CHECK: LBB0_9:
> +; CHECK: # %block_11
> ; CHECK-NEXT: movq (%r14), %rax
> ; CHECK-NEXT: testq %rax, %rax
> ; CHECK-NEXT: je
> -; CHECK-NEXT:# BB#10:
> +; CHECK-NEXT:# %block_14
> ; CHECK-NEXT: cmpq $0, 8(%rax)
> ; CHECK-NEXT: jne
> -; CHECK-NEXT:# BB#11:
> +; CHECK-NEXT:# %block_18
> ; CHECK-NEXT: movq (%r14), %rax
> ; CHECK-NEXT: testq %rax, %rax
> ; CHECK-NEXT: je
> -; CHECK-NEXT:LBB0_12:
> +; CHECK-NEXT:# %block_21
> +; CHECK-NEXT:# =>This Inner Loop Header
> ; CHECK-NEXT: cmpq $0, 8(%rax)
> ; CHECK-NEXT: jne
> -; CHECK-NEXT:# BB#13:
> +; CHECK-NEXT:# %block_25
> +; CHECK-NEXT:# in Loop
> ; CHECK-NEXT: movq (%r14), %rax
> ; CHECK-NEXT: testq %rax, %rax
> ; CHECK-NEXT: jne
> - br i1 %c, label %34, label %3
> + br i1 %c, label %block_34, label %block_3
>
> -; <label>:3: ; preds = %2
> - br i1 %c, label %7, label %4
> +block_3: ; preds = %2
> + br i1 %c, label %block_7, label %block_4
>
> -; <label>:4: ; preds = %3
> - %5 = tail call i32 @f(i32 undef, i32 undef)
> - %6 = icmp eq i32 %5, 0
> - br i1 %6, label %7, label %34
> -
> -; <label>:7: ; preds = %4, %3
> - %8 = icmp eq %2* null, null
> - br i1 %8, label %34, label %9
> -
> -; <label>:9: ; preds = %7
> - %10 = icmp eq i8* %p1, null
> - br i1 %10, label %11, label %32
> -
> -; <label>:11: ; preds = %9
> - %12 = load %2*, %2** %p2, align 8
> - %13 = icmp eq %2* %12, null
> - br i1 %13, label %34, label %14
> -
> -; <label>:14: ; preds = %11
> - %15 = getelementptr inbounds %2, %2* %12, i64 0, i32 1
> - %16 = load i8*, i8** %15, align 8
> - %17 = icmp eq i8* %16, null
> - br i1 %17, label %18, label %32
> -
> -; <label>:18: ; preds = %14
> - %19 = load %2*, %2** %p2, align 8
> - %20 = icmp eq %2* %19, null
> - br i1 %20, label %34, label %21
> -
> -; <label>:21: ; preds = %18
> - %22 = getelementptr inbounds %2, %2* %19, i64 0, i32 1
> - %23 = load i8*, i8** %22, align 8
> - %24 = icmp eq i8* %23, null
> - br i1 %24, label %25, label %32
> -
> -; <label>:25: ; preds = %28, %21
> - %26 = load %2*, %2** %p2, align 8
> - %27 = icmp eq %2* %26, null
> - br i1 %27, label %34, label %28
> -
> -; <label>:28: ; preds = %25
> - %29 = getelementptr inbounds %2, %2* %26, i64 0, i32 1
> - %30 = load i8*, i8** %29, align 8
> - %31 = icmp eq i8* %30, null
> - br i1 %31, label %25, label %32
> -
> -; <label>:32: ; preds = %28, %21, %14, %9
> - %33 = tail call i32 (...) @Up()
> - br label %34
> -
> -; <label>:34: ; preds = %32, %25, %18, %11, %7, %4, %2
> - %35 = phi i32 [ 0, %2 ], [ %5, %4 ], [ 0, %7 ], [ 0, %11 ], [ 0, %32 ], [ 0, %18 ], [ 0, %25 ]
> - ret i32 %35
> +block_4: ; preds = %block_3
> + %a5 = tail call i32 @f(i32 undef, i32 undef)
> + %a6 = icmp eq i32 %a5, 0
> + br i1 %a6, label %block_7, label %block_34
> +
> +block_7: ; preds = %block_4, %block_3
> + %a8 = icmp eq %2* null, null
> + br i1 %a8, label %block_34, label %block_9
> +
> +block_9: ; preds = %block_7
> + %a10 = icmp eq i8* %p1, null
> + br i1 %a10, label %block_11, label %block_32
> +
> +block_11: ; preds = %block_9
> + %a12 = load %2*, %2** %p2, align 8
> + %a13 = icmp eq %2* %a12, null
> + br i1 %a13, label %block_34, label %block_14
> +
> +block_14: ; preds = %block_11
> + %a15 = getelementptr inbounds %2, %2* %a12, i64 0, i32 1
> + %a16 = load i8*, i8** %a15, align 8
> + %a17 = icmp eq i8* %a16, null
> + br i1 %a17, label %block_18, label %block_32
> +
> +block_18: ; preds = %block_14
> + %a19 = load %2*, %2** %p2, align 8
> + %a20 = icmp eq %2* %a19, null
> + br i1 %a20, label %block_34, label %block_21
> +
> +block_21: ; preds = %block_18
> + %a22 = getelementptr inbounds %2, %2* %a19, i64 0, i32 1
> + %a23 = load i8*, i8** %a22, align 8
> + %a24 = icmp eq i8* %a23, null
> + br i1 %a24, label %block_25, label %block_32
> +
> +block_25: ; preds = %block_28, %block_21
> + %a26 = load %2*, %2** %p2, align 8
> + %a27 = icmp eq %2* %a26, null
> + br i1 %a27, label %block_34, label %block_28
> +
> +block_28: ; preds = %block_25
> + %a29 = getelementptr inbounds %2, %2* %a26, i64 0, i32 1
> + %a30 = load i8*, i8** %a29, align 8
> + %a31 = icmp eq i8* %a30, null
> + br i1 %a31, label %block_25, label %block_32
> +
> +block_32: ; preds = %block_28, %block_21, %block_14, %block_9
> + %a33 = tail call i32 (...) @Up()
> + br label %block_34
> +
> +block_34: ; preds = %block_32, %block_25, %block_18, %block_11, %block_7, %block_4, %2
> + %a35 = phi i32 [ 0, %2 ], [ %a5, %block_4 ], [ 0, %block_7 ], [ 0, %block_11 ], [ 0, %block_32 ], [ 0, %block_18 ], [ 0, %block_25 ]
> + ret i32 %a35
> }
>
>
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