3dd8c9176b
MSSA-based LICM has been enabled by default for a few years now. This drops the old AST-based implementation. Using loop(licm) will result in a fatal error, the use of loop-mssa(licm) is required (or just licm, which defaults to loop-mssa). Note that the core canSinkOrHoistInst() logic has to retain AST support for now, because it is shared with LoopSink. Differential Revision: https://reviews.llvm.org/D108244
38 lines
1.1 KiB
LLVM
38 lines
1.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -licm -adce -licm -S < %s | FileCheck %s
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; RUN: opt -passes='loop-mssa(licm),adce,loop-mssa(licm)' -S < %s | FileCheck %s
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;
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2"
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target triple = "x86_64-unknown-linux-gnu"
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define void @test() {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: br label [[BB2:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: ret void
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; CHECK: bb2:
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; CHECK-NEXT: br label [[BB4:%.*]]
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; CHECK: bb3:
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; CHECK-NEXT: unreachable
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; CHECK: bb4:
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; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2]]
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;
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bb:
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br label %bb2
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bb1: ; preds = %bb4
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ret void
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bb2: ; preds = %bb4, %bb
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br i1 undef, label %bb4, label %bb3
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bb3: ; preds = %bb2
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br label %bb4
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bb4: ; preds = %bb3, %bb2
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br i1 undef, label %bb1, label %bb2
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}
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