31 lines
882 B
LLVM
31 lines
882 B
LLVM
; RUN: llc -mtriple=x86_64-unknown-linux-gnu -o - -global-isel < %s 2>&1 | FileCheck %s
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; REQUIRES: asserts
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; XFAIL: *
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define i32 @test_01(i32* %p, i64 %len, i32 %x) {
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; CHECK-LABEL: test_01
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entry:
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%scevgep = getelementptr i32, i32* %p, i64 -1
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br label %loop
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loop: ; preds = %backedge, %entry
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%iv = phi i64 [ %iv.next, %backedge ], [ %len, %entry ]
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%iv.next = add i64 %iv, -1
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%cond_1 = icmp eq i64 %iv, 0
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br i1 %cond_1, label %exit, label %backedge
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backedge: ; preds = %loop
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%scevgep1 = getelementptr i32, i32* %scevgep, i64 %iv
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%loaded = load atomic i32, i32* %scevgep1 unordered, align 4
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%cond_2 = icmp eq i32 %loaded, %x
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br i1 %cond_2, label %failure, label %loop
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exit: ; preds = %loop
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ret i32 -1
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failure:
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unreachable
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}
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