derek.holloway
7502bf64a4
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68 lines
2.1 KiB
LLVM
68 lines
2.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
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declare void @use(i1)
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; Make sure we do not crash when trying to inject info about vector values from SCEV.
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define void @test_vector_iv(i32 %x, i1 %c) {
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; CHECK-LABEL: @test_vector_iv(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[C:%.*]], label [[PRE:%.*]], label [[BB2:%.*]]
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; CHECK: pre:
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; CHECK-NEXT: [[C_1:%.*]] = icmp ule i32 [[X:%.*]], 10
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; CHECK-NEXT: br i1 [[C_1]], label [[LOOP:%.*]], label [[BB2]]
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; CHECK: loop:
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; CHECK-NEXT: [[IV:%.*]] = phi <4 x i8> [ zeroinitializer, [[PRE]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: [[C_2:%.*]] = icmp ule i32 [[X]], 9
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; CHECK-NEXT: call void @use(i1 [[C_2]])
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; CHECK-NEXT: [[C_3:%.*]] = icmp ugt i32 [[X]], 9
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; CHECK-NEXT: call void @use(i1 [[C_3]])
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw <4 x i8> [[IV]], splat (i8 1)
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; CHECK-NEXT: [[E:%.*]] = extractelement <4 x i8> [[IV_NEXT]], i8 2
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; CHECK-NEXT: [[EC:%.*]] = icmp eq i8 [[E]], 100
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; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
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; CHECK: exit:
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: ret void
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; CHECK: bb2:
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; CHECK-NEXT: [[C_5:%.*]] = icmp ugt i32 [[X]], 10
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; CHECK-NEXT: call void @use(i1 [[C_5]])
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; CHECK-NEXT: ret void
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;
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entry:
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br i1 %c, label %pre, label %bb2
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pre:
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%c.1 = icmp ule i32 %x, 10
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br i1 %c.1, label %loop, label %bb2
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loop:
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%iv = phi <4 x i8> [ zeroinitializer, %pre ], [ %iv.next, %loop ]
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%t.1 = icmp ule i32 %x, 10
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call void @use(i1 %t.1)
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%f.1 = icmp ugt i32 %x, 10
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call void @use(i1 %f.1)
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%c.2 = icmp ule i32 %x, 9
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call void @use(i1 %c.2)
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%c.3 = icmp ugt i32 %x, 9
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call void @use(i1 %c.3)
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%iv.next = add nuw nsw <4 x i8> %iv, <i8 1, i8 1, i8 1, i8 1>
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%e = extractelement <4 x i8> %iv.next, i8 2
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%ec = icmp eq i8 %e, 100
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br i1 %ec, label %exit, label %loop
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exit:
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%c.4 = icmp ule i32 %x, 10
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call void @use(i1 %c.4)
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ret void
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bb2:
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%c.5 = icmp ugt i32 %x, 10
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call void @use(i1 %c.5)
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ret void
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}
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