derek.holloway
7502bf64a4
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108 lines
3.2 KiB
LLVM
108 lines
3.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt -S -passes=indvars < %s | FileCheck %s
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target datalayout = "n64"
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declare void @use(i64)
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define void @or_disjoint() {
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; CHECK-LABEL: define void @or_disjoint() {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 2, [[ENTRY:%.*]] ], [ [[IV_DEC:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[OR:%.*]] = or disjoint i64 [[IV]], 1
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; CHECK-NEXT: [[ADD:%.*]] = add nuw nsw i64 [[IV]], 1
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; CHECK-NEXT: [[SEL:%.*]] = select i1 false, i64 [[OR]], i64 [[ADD]]
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; CHECK-NEXT: call void @use(i64 [[SEL]])
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; CHECK-NEXT: [[IV_DEC]] = add nsw i64 [[IV]], -1
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; CHECK-NEXT: [[EXIT_COND:%.*]] = icmp eq i64 [[IV_DEC]], 0
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; CHECK-NEXT: br i1 [[EXIT_COND]], label [[EXIT:%.*]], label [[LOOP]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop
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loop:
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%iv = phi i64 [ 2, %entry ], [ %iv.dec, %loop ]
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%or = or disjoint i64 %iv, 1
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%add = add nsw i64 %iv, 1
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%sel = select i1 false, i64 %or, i64 %add
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call void @use(i64 %sel)
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%iv.dec = add nsw i64 %iv, -1
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%exit.cond = icmp eq i64 %iv.dec, 0
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br i1 %exit.cond, label %exit, label %loop
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exit:
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ret void
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}
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define void @add_nowrap_flags(i64 %n) {
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; CHECK-LABEL: define void @add_nowrap_flags(
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; CHECK-SAME: i64 [[N:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_INC:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[ADD1:%.*]] = add i64 [[IV]], 123
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; CHECK-NEXT: call void @use(i64 [[ADD1]])
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; CHECK-NEXT: [[IV_INC]] = add i64 [[IV]], 1
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; CHECK-NEXT: [[EXIT_COND:%.*]] = icmp eq i64 [[IV_INC]], [[N]]
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; CHECK-NEXT: br i1 [[EXIT_COND]], label [[EXIT:%.*]], label [[LOOP]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop
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loop:
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%iv = phi i64 [ 0, %entry ], [ %iv.inc, %loop ]
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%add1 = add nuw nsw i64 %iv, 123
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%add2 = add i64 %iv, 123
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%sel = select i1 false, i64 %add1, i64 %add2
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call void @use(i64 %sel)
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%iv.inc = add i64 %iv, 1
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%exit.cond = icmp eq i64 %iv.inc, %n
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br i1 %exit.cond, label %exit, label %loop
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exit:
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ret void
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}
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define void @expander_or_disjoint(i64 %n) {
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; CHECK-LABEL: define void @expander_or_disjoint(
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; CHECK-SAME: i64 [[N:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[OR:%.*]] = or disjoint i64 [[N]], 1
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; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[N]], 1
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_INC:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[IV_INC]] = add i64 [[IV]], 1
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; CHECK-NEXT: [[ADD:%.*]] = add i64 [[IV]], [[OR]]
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; CHECK-NEXT: call void @use(i64 [[ADD]])
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[IV_INC]], [[TMP0]]
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[EXIT:%.*]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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%or = or disjoint i64 %n, 1
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br label %loop
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loop:
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%iv = phi i64 [ 0, %entry ], [ %iv.inc, %loop ]
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%iv.inc = add i64 %iv, 1
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%add = add i64 %iv, %or
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call void @use(i64 %add)
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%cmp = icmp ult i64 %iv, %n
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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