derek.holloway
7502bf64a4
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66 lines
1.8 KiB
LLVM
66 lines
1.8 KiB
LLVM
; RUN: opt < %s -passes='require<loops>,gvn' -S | FileCheck %s
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; This test is checking that (a) this doesn't crash, and (b) we don't
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; conclude the value of %tmp17 is available in bb1.bb15_crit_edge.
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; rdar://9429882
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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define i1 @rb_intern(ptr %foo) nounwind ssp {
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; CHECK-LABEL: @rb_intern(
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bb:
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%tmp = alloca ptr, align 8
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store ptr null, ptr %tmp, align 8
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store i8 undef, ptr null, align 536870912
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br label %bb1
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bb1:
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br i1 undef, label %bb3, label %bb15
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; CHECK: bb1:
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; CHECK: [[TMP:%.*]] = phi ptr [ %tmp14, %bb10 ], [ null, %bb ]
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; CHECK: bb1.bb15_crit_edge:
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; CHECK: %tmp17.pre = load i8, ptr [[TMP]], align 1
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bb3:
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call void @isalnum()
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br i1 undef, label %bb10, label %bb5
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bb5:
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br i1 undef, label %bb10, label %bb6
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bb6:
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%tmp7 = load ptr, ptr %tmp, align 8
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%tmp8 = load i8, ptr %tmp7, align 1
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%tmp9 = zext i8 %tmp8 to i64
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br i1 undef, label %bb15, label %bb10
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bb10:
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%tmp11 = load ptr, ptr %tmp, align 8
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%tmp12 = load i8, ptr %tmp11, align 1
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%tmp13 = zext i8 %tmp12 to i64
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%tmp14 = getelementptr inbounds i8, ptr %foo, i64 undef
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store ptr %tmp14, ptr %tmp, align 8
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br label %bb1
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bb15:
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%tmp16 = load ptr, ptr %tmp, align 8
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%tmp17 = load i8, ptr %tmp16, align 1
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%tmp18 = icmp eq i8 %tmp17, 0
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br label %bb19
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; CHECK-LABEL: bb6:
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; CHECK: br i1 undef, label %bb15split, label %bb10
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; CHECK-LABEL: bb15split: ; preds = %bb6
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; CHECK-NEXT: br label %bb15
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; CHECK-LABEL: bb15:
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; CHECK: %tmp17 = phi i8 [ %tmp12.pre3, %bb15split ], [ %tmp17.pre, %bb1.bb15_crit_edge ]
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bb19: ; preds = %bb15
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ret i1 %tmp18
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}
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declare void @isalnum() nounwind inlinehint ssp
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