[llvm] 7347524 - [LoopInterchange][NFC] autogenerate checks in inner-preheader-single-phi (#203843)

[via llvm-commits]

Author: Madhur Amilkanthwar
Date: 2026-06-15T09:37:03Z
New Revision: 7347524c3a6e6cd8ebc66343759207131011009a

URL: https://github.com/llvm/llvm-project/commit/7347524c3a6e6cd8ebc66343759207131011009a
DIFF: https://github.com/llvm/llvm-project/commit/7347524c3a6e6cd8ebc66343759207131011009a.diff

LOG: [LoopInterchange][NFC] autogenerate checks in inner-preheader-single-phi (#203843)

Added: 
    

Modified: 
    llvm/test/Transforms/LoopInterchange/inner-preheader-single-phi.ll

Removed: 
    


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diff  --git a/llvm/test/Transforms/LoopInterchange/inner-preheader-single-phi.ll b/llvm/test/Transforms/LoopInterchange/inner-preheader-single-phi.ll
index 6e9335469b3b2..5604311bec5e0 100644
--- a/llvm/test/Transforms/LoopInterchange/inner-preheader-single-phi.ll
+++ b/llvm/test/Transforms/LoopInterchange/inner-preheader-single-phi.ll
@@ -1,8 +1,41 @@
-; RUN: opt -passes=loop-interchange -loop-interchange-profitabilities=ignore --disable-output %s
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
+; RUN: opt -passes=loop-interchange -loop-interchange-profitabilities=ignore \
+; RUN:     -S %s | FileCheck %s
 ; Loop-interchange pass doesn't crash if the inner loop preheader has PHI nodes.
 
 
 define void @f(ptr %A) {
+; CHECK-LABEL: define void @f(
+; CHECK-SAME: ptr [[A:%.*]]) {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    br label %[[INNER_PH:.*]]
+; CHECK:       [[OUTER_HEADER_PREHEADER:.*]]:
+; CHECK-NEXT:    br label %[[OUTER_HEADER:.*]]
+; CHECK:       [[OUTER_HEADER]]:
+; CHECK-NEXT:    [[I:%.*]] = phi i64 [ [[I_INC:%.*]], %[[OUTER_LATCH:.*]] ], [ 0, %[[OUTER_HEADER_PREHEADER]] ]
+; CHECK-NEXT:    br label %[[INNER_SPLIT1:.*]]
+; CHECK:       [[INNER_PH]]:
+; CHECK-NEXT:    br label %[[INNER:.*]]
+; CHECK:       [[INNER]]:
+; CHECK-NEXT:    [[J:%.*]] = phi i64 [ 0, %[[INNER_PH]] ], [ [[TMP0:%.*]], %[[INNER_SPLIT:.*]] ]
+; CHECK-NEXT:    br label %[[OUTER_HEADER_PREHEADER]]
+; CHECK:       [[INNER_SPLIT1]]:
+; CHECK-NEXT:    [[J_INC:%.*]] = add i64 [[J]], 1
+; CHECK-NEXT:    [[EC_J:%.*]] = icmp eq i64 [[J_INC]], 10
+; CHECK-NEXT:    br label %[[OUTER_BODY:.*]]
+; CHECK:       [[INNER_SPLIT]]:
+; CHECK-NEXT:    [[TMP0]] = add i64 [[J]], 1
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i64 [[TMP0]], 10
+; CHECK-NEXT:    br i1 [[TMP1]], label %[[EXIT:.*]], label %[[INNER]]
+; CHECK:       [[OUTER_BODY]]:
+; CHECK-NEXT:    br label %[[OUTER_LATCH]]
+; CHECK:       [[OUTER_LATCH]]:
+; CHECK-NEXT:    [[I_INC]] = add i64 [[I]], 1
+; CHECK-NEXT:    [[EC_I:%.*]] = icmp eq i64 [[I_INC]], 10
+; CHECK-NEXT:    br i1 [[EC_I]], label %[[INNER_SPLIT]], label %[[OUTER_HEADER]]
+; CHECK:       [[EXIT]]:
+; CHECK-NEXT:    ret void
+;
 entry:
   br label %outer.header