[llvm] [VPlan] Lower BranchOnTwoConds to chain of 2 simple branches. (PR #174016)
via llvm-commits
llvm-commits at lists.llvm.org
Tue Dec 30 13:11:53 PST 2025
github-actions[bot] wrote:
<!--PREMERGE ADVISOR COMMENT: Linux-->
# :penguin: Linux x64 Test Results
* 167528 tests passed
* 2971 tests skipped
* 1 test failed
## Failed Tests
(click on a test name to see its output)
### LLVM
<details>
<summary>LLVM.Transforms/PhaseOrdering/AArch64/std-find.ll</summary>
```
Exit Code: 1
Command Output (stdout):
--
# RUN: at line 2
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/opt -O3 -S /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/PhaseOrdering/AArch64/std-find.ll | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/PhaseOrdering/AArch64/std-find.ll
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/opt -O3 -S /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/PhaseOrdering/AArch64/std-find.ll
# note: command had no output on stdout or stderr
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/PhaseOrdering/AArch64/std-find.ll
# .---command stderr------------
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/PhaseOrdering/AArch64/std-find.ll:14:15: error: CHECK-NEXT: is not on the line after the previous match
# | ; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
# | ^
# | <stdin>:162:2: note: 'next' match was here
# | br label %return
# | ^
# | <stdin>:12:112: note: previous match ended here
# | %broadcast.splat = shufflevector <8 x i16> %broadcast.splatinsert, <8 x i16> poison, <8 x i32> zeroinitializer
# | ^
# | <stdin>:13:1: note: non-matching line after previous match is here
# | %wide.load = load <8 x i16>, ptr %first.coerce, align 2
# | ^
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/PhaseOrdering/AArch64/std-find.ll:156:15: error: CHECK-NEXT: expected string not found in input
# | ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[PROL_ITER_NEXT:%.*]], %[[VECTOR_BODY]] ]
# | ^
# | <stdin>:219:13: note: scanning from here
# | vector.body: ; preds = %cond.0, %vector.ph
# | ^
# | <stdin>:219:13: note: with "VECTOR_PH" equal to "vector.ph"
# | vector.body: ; preds = %cond.0, %vector.ph
# | ^
# | <stdin>:219:13: note: with "VECTOR_BODY" equal to "vector.body"
# | vector.body: ; preds = %cond.0, %vector.ph
# | ^
# | <stdin>:220:2: note: possible intended match here
# | %index = phi i64 [ 0, %vector.ph ], [ %index.next, %cond.0 ]
# | ^
# |
# | Input file: <stdin>
# | Check file: /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/PhaseOrdering/AArch64/std-find.ll
# |
# | -dump-input=help explains the following input dump.
# |
# | Input was:
# | <<<<<<
# | .
# | .
# | .
# | 157: %.lcssa = phi <8 x i1> [ %0, %entry ], [ %2, %cond.0 ], [ %4, %cond.0.1 ], [ %6, %cond.0.2 ], [ %8, %cond.0.3 ], [ %10, %cond.0.4 ], [ %12, %cond.0.5 ], [ %14, %cond.0.6 ], [ %16, %cond.0.7 ], [ %18, %cond.0.8 ], [ %20, %cond.0.9 ], [ %22, %cond.0.10 ], [ %24, %cond.0.11 ], [ %26, %cond.0.12 ], [ %28, %cond.0.13 ], [ %30, %cond.0.14 ]
# | 158: %32 = tail call i64 @llvm.experimental.cttz.elts.i64.v8i1(<8 x i1> %.lcssa, i1 false)
# | 159: %33 = add i64 %index.lcssa, %32
# | 160: %34 = shl i64 %33, 1
# | 161: %35 = getelementptr i8, ptr %first.coerce, i64 %34
# | 162: br label %return
# | next:14 !~~~~~~~~~~~~~~~ error: match on wrong line
# | 163:
# | 164: return: ; preds = %cond.0.14, %vector.early.exit
# | 165: %merge = phi ptr [ %35, %vector.early.exit ], [ %coerce.val.ip, %cond.0.14 ]
# | 166: %res = ptrtoint ptr %merge to i64
# | 167: ret i64 %res
# | .
# | .
# | .
# | 214: %n.vec = and i64 %3, -8
# | 215: %4 = shl i64 %n.vec, 1
# | 216: %5 = getelementptr i8, ptr %first, i64 %4
# | 217: br label %vector.body
# | 218:
# | 219: vector.body: ; preds = %cond.0, %vector.ph
# | next:156'0 X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
# | next:156'1 with "VECTOR_PH" equal to "vector.ph"
# | next:156'2 with "VECTOR_BODY" equal to "vector.body"
# | 220: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %cond.0 ]
# | next:156'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | next:156'3 ? possible intended match
# | 221: %offset.idx = shl i64 %index, 1
# | next:156'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | 222: %next.gep = getelementptr i8, ptr %first, i64 %offset.idx
# | next:156'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | 223: %wide.load = load <8 x i16>, ptr %next.gep, align 2
# | next:156'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | 224: %wide.load.fr = freeze <8 x i16> %wide.load
# | next:156'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | 225: %6 = icmp eq <8 x i16> %wide.load.fr, splat (i16 1)
# | next:156'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | .
# | .
# | .
# | >>>>>>
# `-----------------------------
# error: command failed with exit status: 1
--
```
</details>
If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.
https://github.com/llvm/llvm-project/pull/174016
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