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; ; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s
define void @infer.sext.0(i1* %c, i32 %start) {
; CHECK-LABEL: Classifying expressions for: @infer.sext.0
entry:
br label %loop
loop:
%counter = phi i32 [ 0, %entry ], [ %counter.inc, %loop ]
%idx = phi i32 [ %start, %entry ], [ %idx.inc, %loop ]
%idx.inc = add nsw i32 %idx, 1
%idx.inc.sext = sext i32 %idx.inc to i64
; CHECK: %idx.inc.sext = sext i32 %idx.inc to i64
; CHECK-NEXT: --> {(1 + (sext i32 %start to i64)),+,1}<nsw><%loop>
%condition = icmp eq i32 %counter, 1
%counter.inc = add i32 %counter, 1
br i1 %condition, label %exit, label %loop
exit:
ret void
}
define void @infer.zext.0(i1* %c, i32 %start) {
; CHECK-LABEL: Classifying expressions for: @infer.zext.0
entry:
br label %loop
loop:
%counter = phi i32 [ 0, %entry ], [ %counter.inc, %loop ]
%idx = phi i32 [ %start, %entry ], [ %idx.inc, %loop ]
%idx.inc = add nuw i32 %idx, 1
%idx.inc.sext = zext i32 %idx.inc to i64
; CHECK: %idx.inc.sext = zext i32 %idx.inc to i64
; CHECK-NEXT: --> {(1 + (zext i32 %start to i64)),+,1}<nuw><%loop>
%condition = icmp eq i32 %counter, 1
%counter.inc = add i32 %counter, 1
br i1 %condition, label %exit, label %loop
exit:
ret void
}
define void @infer.sext.1(i32 %start, i1* %c) {
; CHECK-LABEL: Classifying expressions for: @infer.sext.1
entry:
%start.mul = mul i32 %start, 4
%start.real = add i32 %start.mul, 2
br label %loop
loop:
%idx = phi i32 [ %start.real, %entry ], [ %idx.inc, %loop ]
%idx.sext = sext i32 %idx to i64
; CHECK: %idx.sext = sext i32 %idx to i64
; CHECK-NEXT: --> {(2 + (sext i32 (4 * %start) to i64)),+,2}<nsw><%loop>
%idx.inc = add nsw i32 %idx, 2
%condition = load i1, i1* %c
br i1 %condition, label %exit, label %loop
exit:
ret void
}
define void @infer.sext.2(i1* %c, i8 %start) {
; CHECK-LABEL: Classifying expressions for: @infer.sext.2
entry:
%start.inc = add i8 %start, 1
%entry.condition = icmp slt i8 %start, 127
br i1 %entry.condition, label %loop, label %exit
loop:
%idx = phi i8 [ %start.inc, %entry ], [ %idx.inc, %loop ]
%idx.sext = sext i8 %idx to i16
; CHECK: %idx.sext = sext i8 %idx to i16
; CHECK-NEXT: --> {(1 + (sext i8 %start to i16)),+,1}<nsw><%loop>
%idx.inc = add nsw i8 %idx, 1
%condition = load volatile i1, i1* %c
br i1 %condition, label %exit, label %loop
exit:
ret void
}
define void @infer.zext.1(i1* %c, i8 %start) {
; CHECK-LABEL: Classifying expressions for: @infer.zext.1
entry:
%start.inc = add i8 %start, 1
%entry.condition = icmp ult i8 %start, 255
br i1 %entry.condition, label %loop, label %exit
loop:
%idx = phi i8 [ %start.inc, %entry ], [ %idx.inc, %loop ]
%idx.zext = zext i8 %idx to i16
; CHECK: %idx.zext = zext i8 %idx to i16
; CHECK-NEXT: --> {(1 + (zext i8 %start to i16)),+,1}<nuw><%loop>
%idx.inc = add nuw i8 %idx, 1
%condition = load volatile i1, i1* %c
br i1 %condition, label %exit, label %loop
exit:
ret void
}
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