47 lines
1.1 KiB
LLVM
47 lines
1.1 KiB
LLVM
; 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 void @f(i1* %condition) {
|
|
; CHECK-LABEL: Classifying expressions for: @f
|
|
entry:
|
|
br label %loop
|
|
|
|
loop:
|
|
%idx = phi i32 [ 0, %entry ], [ %idx.inc, %loop ]
|
|
%idx.inc = add nsw i32 %idx, 1
|
|
|
|
%idx.inc2 = add i32 %idx.inc, 1
|
|
%idx.inc2.zext = zext i32 %idx.inc2 to i64
|
|
|
|
; CHECK: %idx.inc2.zext = zext i32 %idx.inc2 to i64
|
|
; CHECK-NEXT: --> {2,+,1}<nuw><%loop>
|
|
|
|
%c = load volatile i1, i1* %condition
|
|
br i1 %c, label %loop, label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @g(i1* %condition) {
|
|
; CHECK-LABEL: Classifying expressions for: @g
|
|
entry:
|
|
br label %loop
|
|
|
|
loop:
|
|
%idx = phi i32 [ 0, %entry ], [ %idx.inc, %loop ]
|
|
%idx.inc = add nsw i32 %idx, 3
|
|
|
|
%idx.inc2 = add i32 %idx.inc, -1
|
|
%idx.inc2.sext = sext i32 %idx.inc2 to i64
|
|
; CHECK: %idx.inc2.sext = sext i32 %idx.inc2 to i64
|
|
; CHECK-NEXT: --> {2,+,3}<nuw><nsw><%loop>
|
|
|
|
%cond.gep = getelementptr inbounds i1, i1* %condition, i32 %idx.inc
|
|
%c = load volatile i1, i1* %cond.gep
|
|
br i1 %c, label %loop, label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|