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52 lines
1.3 KiB
LLVM
52 lines
1.3 KiB
LLVM
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; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s
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define i32 @branch_true(i32 %x, i32 %y) {
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; CHECK-LABEL: Classifying expressions for: @branch_true
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entry:
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br i1 true, label %add, label %merge
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add:
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%sum = add i32 %x, %y
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br label %merge
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merge:
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%v = phi i32 [ %sum, %add ], [ %x, %entry ]
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; CHECK: %v = phi i32 [ %sum, %add ], [ %x, %entry ]
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; CHECK-NEXT: --> (%x + %y) U: full-set S: full-set
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ret i32 %v
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}
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define i32 @branch_false(i32 %x, i32 %y) {
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; CHECK-LABEL: Classifying expressions for: @branch_false
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entry:
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br i1 false, label %add, label %merge
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add:
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%sum = add i32 %x, %y
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br label %merge
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merge:
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%v = phi i32 [ %sum, %add ], [ %x, %entry ]
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; CHECK: %v = phi i32 [ %sum, %add ], [ %x, %entry ]
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; CHECK-NEXT: --> %x U: full-set S: full-set
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ret i32 %v
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}
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define i32 @select_true(i32 %x, i32 %y) {
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; CHECK-LABEL: Classifying expressions for: @select_true
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entry:
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%v = select i1 true, i32 %x, i32 %y
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; CHECK: %v = select i1 true, i32 %x, i32 %y
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; CHECK-NEXT: --> %x U: full-set S: full-set
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ret i32 %v
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}
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define i32 @select_false(i32 %x, i32 %y) {
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; CHECK-LABEL: Classifying expressions for: @select_false
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entry:
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%v = select i1 false, i32 %x, i32 %y
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; CHECK: %v = select i1 false, i32 %x, i32 %y
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; CHECK-NEXT: --> %y U: full-set S: full-set
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ret i32 %v
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}
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