[llvm] r278841 - [BranchFolding] Change a test case of r278575.
Haicheng Wu via llvm-commits
llvm-commits at lists.llvm.org
Tue Aug 16 13:06:26 PDT 2016
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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