constant_condition.ll
1.38 KB
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; RUN: opt -analyze -enable-new-pm=0 -scalar-evolution < %s | FileCheck %s
; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s
define i32 @branch_true(i32 %x, i32 %y) {
; CHECK-LABEL: Classifying expressions for: @branch_true
entry:
br i1 true, label %add, label %merge
add:
%sum = add i32 %x, %y
br label %merge
merge:
%v = phi i32 [ %sum, %add ], [ %x, %entry ]
; CHECK: %v = phi i32 [ %sum, %add ], [ %x, %entry ]
; CHECK-NEXT: --> (%x + %y) U: full-set S: full-set
ret i32 %v
}
define i32 @branch_false(i32 %x, i32 %y) {
; CHECK-LABEL: Classifying expressions for: @branch_false
entry:
br i1 false, label %add, label %merge
add:
%sum = add i32 %x, %y
br label %merge
merge:
%v = phi i32 [ %sum, %add ], [ %x, %entry ]
; CHECK: %v = phi i32 [ %sum, %add ], [ %x, %entry ]
; CHECK-NEXT: --> %x U: full-set S: full-set
ret i32 %v
}
define i32 @select_true(i32 %x, i32 %y) {
; CHECK-LABEL: Classifying expressions for: @select_true
entry:
%v = select i1 true, i32 %x, i32 %y
; CHECK: %v = select i1 true, i32 %x, i32 %y
; CHECK-NEXT: --> %x U: full-set S: full-set
ret i32 %v
}
define i32 @select_false(i32 %x, i32 %y) {
; CHECK-LABEL: Classifying expressions for: @select_false
entry:
%v = select i1 false, i32 %x, i32 %y
; CHECK: %v = select i1 false, i32 %x, i32 %y
; CHECK-NEXT: --> %y U: full-set S: full-set
ret i32 %v
}