7d6e8f2a96
If we vectorize a e.g. store, we leave around a bunch of getelementptrs for the individual scalar stores which we removed. We can go ahead and delete them as well. This is purely for test output quality and readability. It should have no effect in any sane pipeline. Differential Revision: https://reviews.llvm.org/D122493
80 lines
2.9 KiB
LLVM
80 lines
2.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -basic-aa -slp-vectorizer -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7 | FileCheck %s
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; Check if the SLPVectorizer does not crash when handling
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; unreachable blocks with unscheduleable instructions.
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.9.0"
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define void @foo(i32* nocapture %x) #0 {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[BB2:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: [[BAD:%.*]] = fadd float [[BAD]], 0.000000e+00
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; CHECK-NEXT: br label [[BB2]]
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; CHECK: bb2:
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; CHECK-NEXT: [[TMP0:%.*]] = phi <4 x i32> [ poison, [[BB1:%.*]] ], [ <i32 2, i32 2, i32 2, i32 2>, [[ENTRY:%.*]] ]
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[X:%.*]] to <4 x i32>*
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; CHECK-NEXT: store <4 x i32> [[TMP0]], <4 x i32>* [[TMP1]], align 4
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; CHECK-NEXT: ret void
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;
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entry:
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br label %bb2
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bb1: ; an unreachable block
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%t3 = getelementptr inbounds i32, i32* %x, i64 4
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%t4 = load i32, i32* %t3, align 4
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%t5 = getelementptr inbounds i32, i32* %x, i64 5
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%t6 = load i32, i32* %t5, align 4
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%bad = fadd float %bad, 0.000000e+00 ; <- an instruction with self dependency,
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; but legal in unreachable code
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%t7 = getelementptr inbounds i32, i32* %x, i64 6
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%t8 = load i32, i32* %t7, align 4
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%t9 = getelementptr inbounds i32, i32* %x, i64 7
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%t10 = load i32, i32* %t9, align 4
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br label %bb2
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bb2:
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%t1.0 = phi i32 [ %t4, %bb1 ], [ 2, %entry ]
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%t2.0 = phi i32 [ %t6, %bb1 ], [ 2, %entry ]
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%t3.0 = phi i32 [ %t8, %bb1 ], [ 2, %entry ]
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%t4.0 = phi i32 [ %t10, %bb1 ], [ 2, %entry ]
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store i32 %t1.0, i32* %x, align 4
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%t12 = getelementptr inbounds i32, i32* %x, i64 1
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store i32 %t2.0, i32* %t12, align 4
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%t13 = getelementptr inbounds i32, i32* %x, i64 2
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store i32 %t3.0, i32* %t13, align 4
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%t14 = getelementptr inbounds i32, i32* %x, i64 3
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store i32 %t4.0, i32* %t14, align 4
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ret void
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}
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define void @bar() {
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; CHECK-LABEL: @bar(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[TMP:%.*]] = load atomic i8*, i8** undef unordered, align 8
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; CHECK-NEXT: br label [[BB6:%.*]]
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; CHECK: bb5:
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; CHECK-NEXT: [[TMP4:%.*]] = load atomic i8*, i8** undef unordered, align 8
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; CHECK-NEXT: br label [[BB6]]
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; CHECK: bb6:
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; CHECK-NEXT: [[TMP7:%.*]] = phi i8* [ [[TMP]], [[BB5:%.*]] ], [ undef, [[BB:%.*]] ]
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; CHECK-NEXT: [[TMP8:%.*]] = phi i8* [ [[TMP4]], [[BB5]] ], [ undef, [[BB]] ]
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; CHECK-NEXT: ret void
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;
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bb:
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%tmp = load atomic i8*, i8** undef unordered, align 8
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br label %bb6
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bb5: ; No predecessors!
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%tmp4 = load atomic i8*, i8** undef unordered, align 8
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br label %bb6
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bb6: ; preds = %bb5, %bb
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%tmp7 = phi i8* [ %tmp, %bb5 ], [ undef, %bb ]
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%tmp8 = phi i8* [ %tmp4, %bb5 ], [ undef, %bb ]
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ret void
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}
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