forked from OSchip/llvm-project
115 lines
4.0 KiB
LLVM
115 lines
4.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -canon-freeze -S | FileCheck %s
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; A set of tests that have several phi nodes
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declare void @call(i32)
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declare i32 @call2()
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define void @onephi_used(i32 %n, i32 %i.init, i32 %j.init) {
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; CHECK-LABEL: @onephi_used(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[I_INIT_FROZEN:%.*]] = freeze i32 [[I_INIT:%.*]]
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[I_INIT_FROZEN]], [[ENTRY:%.*]] ], [ [[I_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[J:%.*]] = phi i32 [ [[J_INIT:%.*]], [[ENTRY]] ], [ [[J_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[I_NEXT]] = add i32 [[I]], 1
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; CHECK-NEXT: [[J_NEXT]] = add nuw nsw i32 [[J]], -2
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; CHECK-NEXT: call void @call(i32 [[I]])
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[I_NEXT]], [[N:%.*]]
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; CHECK-NEXT: br i1 [[COND]], 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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br label %loop
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loop:
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%i = phi i32 [ %i.init, %entry ], [ %i.next, %loop ]
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%j = phi i32 [ %j.init, %entry ], [ %j.next, %loop ]
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%i.next = add nuw nsw i32 %i, 1
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%j.next = add nuw nsw i32 %j, -2
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%i.fr = freeze i32 %i
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call void @call(i32 %i.fr)
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%cond = icmp eq i32 %i.next, %n
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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; Negative test
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define void @twophis_used(i32 %n, i32 %i.init, i32 %j.init) {
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; CHECK-LABEL: @twophis_used(
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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: [[I:%.*]] = phi i32 [ [[I_INIT:%.*]], [[ENTRY:%.*]] ], [ [[I_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[J:%.*]] = phi i32 [ [[J_INIT:%.*]], [[ENTRY]] ], [ [[J_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[I_NEXT]] = add nuw nsw i32 [[I]], 1
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; CHECK-NEXT: [[J_NEXT]] = add nuw nsw i32 [[J]], -2
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; CHECK-NEXT: [[IJ:%.*]] = add i32 [[I]], [[J]]
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; CHECK-NEXT: [[IJ_FR:%.*]] = freeze i32 [[IJ]]
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; CHECK-NEXT: call void @call(i32 [[IJ_FR]])
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[I_NEXT]], [[N:%.*]]
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; CHECK-NEXT: br i1 [[COND]], 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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br label %loop
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loop:
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%i = phi i32 [ %i.init, %entry ], [ %i.next, %loop ]
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%j = phi i32 [ %j.init, %entry ], [ %j.next, %loop ]
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%i.next = add nuw nsw i32 %i, 1
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%j.next = add nuw nsw i32 %j, -2
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%ij = add i32 %i, %j
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%ij.fr = freeze i32 %ij
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call void @call(i32 %ij.fr)
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%cond = icmp eq i32 %i.next, %n
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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; Negative test
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define void @nonindphi_used(i32 %n, i32 %i.init, i32 %j.init, i32 %k.init) {
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; CHECK-LABEL: @nonindphi_used(
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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: [[I:%.*]] = phi i32 [ [[I_INIT:%.*]], [[ENTRY:%.*]] ], [ [[I_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[J:%.*]] = phi i32 [ [[J_INIT:%.*]], [[ENTRY]] ], [ [[J_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[K:%.*]] = phi i32 [ [[K_INIT:%.*]], [[ENTRY]] ], [ [[ANY:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[I_NEXT]] = add nuw nsw i32 [[I]], 1
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; CHECK-NEXT: [[J_NEXT]] = add nuw nsw i32 [[J]], -2
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; CHECK-NEXT: [[IJ:%.*]] = add i32 [[I]], [[J]]
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; CHECK-NEXT: [[IJK:%.*]] = add i32 [[IJ]], [[K]]
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; CHECK-NEXT: [[IJK_FR:%.*]] = freeze i32 [[IJK]]
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; CHECK-NEXT: call void @call(i32 [[IJK_FR]])
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; CHECK-NEXT: [[ANY]] = call i32 @call2()
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[I_NEXT]], [[N:%.*]]
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; CHECK-NEXT: br i1 [[COND]], 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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br label %loop
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loop:
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%i = phi i32 [ %i.init, %entry ], [ %i.next, %loop ]
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%j = phi i32 [ %j.init, %entry ], [ %j.next, %loop ]
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%k = phi i32 [ %k.init, %entry ], [ %any, %loop ]
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%i.next = add nuw nsw i32 %i, 1
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%j.next = add nuw nsw i32 %j, -2
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%ij = add i32 %i, %j
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%ijk = add i32 %ij, %k
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%ijk.fr = freeze i32 %ijk
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call void @call(i32 %ijk.fr)
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%any = call i32 @call2()
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%cond = icmp eq i32 %i.next, %n
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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