102 lines
2.9 KiB
LLVM
102 lines
2.9 KiB
LLVM
; ; 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))<nsw>,+,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))<nuw><nsw>,+,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))<nsw>,+,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))<nsw>,+,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))<nuw><nsw>,+,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
|
|
}
|