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c2ecd4b259
Summary: If unfolding an SUnit results in both load or the operation using it which already exist in the DAG, abort the unfold if they are already scheduled. If not, make sure we don't add duplicate dependencies. This fixes PR37916. Reviewers: davide, eli.friedman, fhahn, bogner Subscribers: MatzeB, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D48666 llvm-svn: 337409
45 lines
1.4 KiB
LLVM
45 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=i386-unknown-linux-gnu %s -o - | FileCheck %s
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@f = external local_unnamed_addr global i64*, align 4
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@a = external global i64, align 8
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define void @fn1() local_unnamed_addr {
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; CHECK-LABEL: fn1:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: .p2align 4, 0x90
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; CHECK-NEXT: .LBB0_1: # %if.end
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; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: movl a+4, %eax
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; CHECK-NEXT: orl a, %eax
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; CHECK-NEXT: movl $a, f
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; CHECK-NEXT: je .LBB0_3
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; CHECK-NEXT: # %bb.2: # %if.end
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; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
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; CHECK-NEXT: jne .LBB0_1
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; CHECK-NEXT: .LBB0_3: # %cond.false
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entry:
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br label %if.end
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if.end: ; preds = %cond.end, %entry
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br label %if.then7
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if.then7: ; preds = %if.end
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store i64* @a, i64** @f, align 4
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%0 = load i64*, i64** @f, align 4
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%1 = load i64, i64* %0, align 4
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%tobool12 = icmp ne i64 %1, 0
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%2 = load i64, i64* @a, align 8
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%tobool13 = icmp ne i64 %2, 0
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%3 = and i1 %tobool12, %tobool13
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%tobool14.demorgan = and i1 %tobool12, %tobool13
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br i1 %tobool14.demorgan, label %cond.end, label %cond.false
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cond.false: ; preds = %if.then7
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unreachable
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cond.end: ; preds = %if.then7
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%conv17 = sext i1 %3 to i8
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br label %if.end
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}
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