You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
60 lines
1.4 KiB
60 lines
1.4 KiB
; RUN: opt -scalar-evolution -analyze < %s | FileCheck %s
|
|
|
|
define void @test1(i8 %t, i32 %len) {
|
|
; CHECK-LABEL: test1
|
|
; CHECK: %sphi = phi i32 [ %ext, %entry ], [ %idx.inc.ext, %loop ]
|
|
; CHECK-NEXT: --> (zext i8 {%t,+,1}<%loop> to i32)
|
|
|
|
entry:
|
|
%st = zext i8 %t to i16
|
|
%ext = zext i8 %t to i32
|
|
%ecmp = icmp ult i16 %st, 42
|
|
br i1 %ecmp, label %loop, label %exit
|
|
|
|
loop:
|
|
|
|
%idx = phi i8 [ %t, %entry ], [ %idx.inc, %loop ]
|
|
%sphi = phi i32 [ %ext, %entry ], [%idx.inc.ext, %loop]
|
|
|
|
%idx.inc = add i8 %idx, 1
|
|
%idx.inc.ext = zext i8 %idx.inc to i32
|
|
%idx.ext = zext i8 %idx to i32
|
|
|
|
%c = icmp ult i32 %idx.inc.ext, %len
|
|
br i1 %c, label %loop, label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @test2(i8 %t, i32 %len) {
|
|
; CHECK-LABEL: test2
|
|
; CHECK: %sphi = phi i32 [ %ext.mul, %entry ], [ %mul, %loop ]
|
|
; CHECK-NEXT: --> (4 * (zext i8 {%t,+,1}<%loop> to i32))
|
|
|
|
entry:
|
|
%st = zext i8 %t to i16
|
|
%ext = zext i8 %t to i32
|
|
%ext.mul = mul i32 %ext, 4
|
|
|
|
%ecmp = icmp ult i16 %st, 42
|
|
br i1 %ecmp, label %loop, label %exit
|
|
|
|
loop:
|
|
|
|
%idx = phi i8 [ %t, %entry ], [ %idx.inc, %loop ]
|
|
%sphi = phi i32 [ %ext.mul, %entry ], [%mul, %loop]
|
|
|
|
%idx.inc = add i8 %idx, 1
|
|
%idx.inc.ext = zext i8 %idx.inc to i32
|
|
%mul = mul i32 %idx.inc.ext, 4
|
|
|
|
%idx.ext = zext i8 %idx to i32
|
|
|
|
%c = icmp ult i32 %idx.inc.ext, %len
|
|
br i1 %c, label %loop, label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|