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.
74 lines
2.4 KiB
74 lines
2.4 KiB
; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s
|
|
|
|
define void @single_loop(i32* %buf, i32 %start) {
|
|
; CHECK-LABEL: Classifying expressions for: @single_loop
|
|
entry:
|
|
%val = add i32 %start, 400
|
|
br label %loop
|
|
|
|
loop:
|
|
%counter = phi i32 [ 0, %entry ], [ %counter.inc, %loop ]
|
|
%idx = phi i32 [ %start, %entry ], [ %idx.inc, %loop ]
|
|
|
|
; CHECK: %counter = phi i32 [ 0, %entry ], [ %counter.inc, %loop ]
|
|
; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Computable }
|
|
; CHECK: %idx = phi i32 [ %start, %entry ], [ %idx.inc, %loop ]
|
|
; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Computable }
|
|
; CHECK: %val2 = add i32 %start, 400
|
|
; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Invariant }
|
|
; CHECK: %idx.inc = add nsw i32 %idx, 1
|
|
; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Computable }
|
|
; CHECK: %val3 = load volatile i32, i32* %buf
|
|
; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Variant }
|
|
|
|
%val2 = add i32 %start, 400
|
|
%idx.inc = add nsw i32 %idx, 1
|
|
%idx.inc.sext = sext i32 %idx.inc to i64
|
|
%condition = icmp eq i32 %counter, 1
|
|
%counter.inc = add i32 %counter, 1
|
|
%val3 = load volatile i32, i32* %buf
|
|
br i1 %condition, label %exit, label %loop
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
|
|
define void @nested_loop(double* %p, i64 %m) {
|
|
; CHECK-LABEL: Classifying expressions for: @nested_loop
|
|
|
|
; CHECK: %j = phi i64 [ 0, %entry ], [ %j.next, %outer.latch ]
|
|
; CHECK-NEXT: --> {{.*}} LoopDispositions: { %outer.loop: Computable, %bb: Invariant }
|
|
; CHECK: %i = phi i64 [ 0, %outer.loop ], [ %i.next, %bb ]
|
|
; CHECK-NEXT: --> {{.*}} LoopDispositions: { %bb: Computable, %outer.loop: Variant }
|
|
; CHECK: %j.add = add i64 %j, 100
|
|
; CHECK-NEXT: --> {{.*}} LoopDispositions: { %bb: Invariant, %outer.loop: Computable }
|
|
; CHECK: %i.next = add i64 %i, 1
|
|
; CHECK-NEXT: --> {{.*}} LoopDispositions: { %bb: Computable, %outer.loop: Variant }
|
|
; CHECK: %j.next = add i64 %j, 91
|
|
; CHECK-NEXT: --> {{.*}} LoopDispositions: { %outer.loop: Computable, %bb: Invariant }
|
|
|
|
entry:
|
|
%k = icmp sgt i64 %m, 0
|
|
br i1 %k, label %outer.loop, label %return
|
|
|
|
outer.loop:
|
|
%j = phi i64 [ 0, %entry ], [ %j.next, %outer.latch ]
|
|
br label %bb
|
|
|
|
bb:
|
|
%i = phi i64 [ 0, %outer.loop ], [ %i.next, %bb ]
|
|
%j.add = add i64 %j, 100
|
|
%i.next = add i64 %i, 1
|
|
%exitcond = icmp eq i64 %i.next, 91
|
|
br i1 %exitcond, label %outer.latch, label %bb
|
|
|
|
outer.latch:
|
|
%j.next = add i64 %j, 91
|
|
%h = icmp eq i64 %j.next, %m
|
|
br i1 %h, label %return, label %outer.loop
|
|
|
|
return:
|
|
ret void
|
|
}
|