derek.holloway
7502bf64a4
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64 lines
1.6 KiB
LLVM
64 lines
1.6 KiB
LLVM
; RUN: opt -passes=constraint-elimination -S -debug %s 2>&1 | FileCheck %s
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; REQUIRES: asserts
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define i1 @test_and_ule(i4 %x, i4 %y, i4 %z) {
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; CHECK: Processing fact to add to the system: icmp ule i4 %x, %y
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; CHECK-NEXT: Adding 'icmp ule i4 %x, %y'
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; CHECK-NEXT: constraint: %x + -1 * %y <= 0
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; CHECK: Processing fact to add to the system: icmp ule i4 %y, %z
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; CHECK-NEXT: Adding 'icmp ule i4 %y, %z'
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; CHECK-NEXT: constraint: %y + -1 * %z <= 0
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; CHECK: Checking %t.1 = icmp ule i4 %x, %z
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; CHECK: Condition icmp ule i4 %x, %z implied by dominating constraints
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; CHECK: Removing %y + -1 * %z <= 0
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; CHECK: Removing %x + -1 * %y <= 0
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entry:
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%c.1 = icmp ule i4 %x, %y
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%c.2 = icmp ule i4 %y, %z
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%and = and i1 %c.1, %c.2
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br i1 %and, label %bb1, label %exit
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bb1:
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%t.1 = icmp ule i4 %x, %z
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ret i1 %t.1
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exit:
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%c.3 = icmp ule i4 %x, %z
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ret i1 %c.3
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}
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define i1 @test_and_ugt(i4 %x, i4 %y, i4 %z) {
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; CHECK: Processing fact to add to the system: icmp ugt i4 %x, %y
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; CHECK-NEXT: Adding 'icmp ugt i4 %x, %y'
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; CHECK-NEXT: constraint: -1 * %x + %y <= -1
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; CHECK: Processing fact to add to the system: icmp ugt i4 %y, %z
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; CHECK-NEXT: Adding 'icmp ugt i4 %y, %z'
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; CHECK-NEXT: constraint: -1 * %y + %z <= -1
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; CHECK: Checking %f.1 = icmp ule i4 %x, %z
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; CHECK: Condition icmp ugt i4 %x, %z implied by dominating constraints
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; CHECK: Removing -1 * %y + %z <= -1
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; CHECK: Removing -1 * %x + %y <= -1
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entry:
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%c.1 = icmp ugt i4 %x, %y
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%c.2 = icmp ugt i4 %y, %z
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%and = and i1 %c.1, %c.2
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br i1 %and, label %bb1, label %exit
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bb1:
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%f.1 = icmp ule i4 %x, %z
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ret i1 %f.1
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exit:
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%c.3 = icmp ule i4 %x, %z
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ret i1 %c.3
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}
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