derek.holloway
7502bf64a4
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109 lines
3.3 KiB
LLVM
109 lines
3.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 4
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; RUN: opt < %s "-passes=print<scalar-evolution>" -scalar-evolution-classify-expressions=0 -disable-output 2>&1 | FileCheck %s
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define void @test1(i32 %n) {
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; CHECK-LABEL: 'test1'
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; CHECK-NEXT: Determining loop execution counts for: @test1
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; CHECK-NEXT: Loop %loop: backedge-taken count is ((-32 + (96 * %n)) /u 32)
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; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i32 134217727
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; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is ((-32 + (96 * %n)) /u 32)
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; CHECK-NEXT: Loop %loop: Trip multiple is 1
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;
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entry:
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%s = mul i32 %n, 96
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br label %loop
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loop:
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%i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
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%i.next = add i32 %i, 32
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%t = icmp ne i32 %i.next, %s
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br i1 %t, label %loop, label %exit
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exit:
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ret void
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}
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; PR19183
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define i32 @test2(i32 %n) {
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; CHECK-LABEL: 'test2'
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; CHECK-NEXT: Determining loop execution counts for: @test2
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; CHECK-NEXT: Loop %loop: backedge-taken count is ((-32 + (32 * (%n /u 32))<nuw>) /u 32)
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; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i32 134217727
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; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is ((-32 + (32 * (%n /u 32))<nuw>) /u 32)
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; CHECK-NEXT: Loop %loop: Trip multiple is 1
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;
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entry:
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%s = and i32 %n, -32
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br label %loop
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loop:
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%i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
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%i.next = add i32 %i, 32
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%t = icmp ne i32 %i.next, %s
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br i1 %t, label %loop, label %exit
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exit:
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ret i32 %i
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}
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define void @test3(i32 %n) {
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; CHECK-LABEL: 'test3'
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; CHECK-NEXT: Determining loop execution counts for: @test3
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; CHECK-NEXT: Loop %loop: backedge-taken count is ((-32 + (32 * %n)) /u 32)
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; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i32 134217727
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; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is ((-32 + (32 * %n)) /u 32)
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; CHECK-NEXT: Loop %loop: Trip multiple is 1
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;
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entry:
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%s = mul i32 %n, 96
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br label %loop
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loop:
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%i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
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%i.next = add i32 %i, 96
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%t = icmp ne i32 %i.next, %s
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br i1 %t, label %loop, label %exit
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exit:
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ret void
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}
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define void @test4(i32 %n) {
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; CHECK-LABEL: 'test4'
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; CHECK-NEXT: Determining loop execution counts for: @test4
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; CHECK-NEXT: Loop %loop: backedge-taken count is ((-4 + (-1431655764 * %n)) /u 4)
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; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i32 1073741823
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; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is ((-4 + (-1431655764 * %n)) /u 4)
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; CHECK-NEXT: Loop %loop: Trip multiple is 1
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;
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entry:
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%s = mul i32 %n, 4
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br label %loop
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loop:
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%i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
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%i.next = add i32 %i, 12
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%t = icmp ne i32 %i.next, %s
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br i1 %t, label %loop, label %exit
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exit:
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ret void
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}
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define void @test5(i32 %n) {
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; CHECK-LABEL: 'test5'
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; CHECK-NEXT: Determining loop execution counts for: @test5
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; CHECK-NEXT: Loop %loop: backedge-taken count is ((-4 + (4 * %n)) /u 4)
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; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i32 1073741823
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; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is ((-4 + (4 * %n)) /u 4)
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; CHECK-NEXT: Loop %loop: Trip multiple is 1
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;
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entry:
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%s = mul i32 %n, 4
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br label %loop
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loop:
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%i = phi i32 [ %s, %entry ], [ %i.next, %loop ]
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%i.next = add i32 %i, -4
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%t = icmp ne i32 %i.next, 0
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br i1 %t, label %loop, label %exit
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exit:
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ret void
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}
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