58 lines
1.7 KiB
LLVM
58 lines
1.7 KiB
LLVM
|
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
|
||
|
|
; RUN: opt -analyze -scalar-evolution %s -enable-new-pm=0 | FileCheck %s
|
||
|
|
; RUN: opt -passes='print<scalar-evolution>' -disable-output %s 2>&1 | FileCheck %s
|
||
|
|
|
||
|
|
; Tests for PR47904.
|
||
|
|
|
||
|
|
define void @test_trip_multiple_4(i32 %num) {
|
||
|
|
; CHECK-LABEL: @test_trip_multiple_4
|
||
|
|
; CHECK: Loop %for.body: backedge-taken count is (-1 + %num)
|
||
|
|
; CHECK-NEXT: Loop %for.body: max backedge-taken count is -2
|
||
|
|
; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
|
||
|
|
; CHECK: Loop %for.body: Trip multiple is 1
|
||
|
|
;
|
||
|
|
entry:
|
||
|
|
%u = urem i32 %num, 4
|
||
|
|
%cmp = icmp eq i32 %u, 0
|
||
|
|
tail call void @llvm.assume(i1 %cmp)
|
||
|
|
%cmp.1 = icmp uge i32 %num, 4
|
||
|
|
tail call void @llvm.assume(i1 %cmp.1)
|
||
|
|
br label %for.body
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
||
|
|
%inc = add nuw nsw i32 %i.010, 1
|
||
|
|
%cmp2 = icmp ult i32 %inc, %num
|
||
|
|
br i1 %cmp2, label %for.body, label %exit
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
define void @test_trip_multiple_5(i32 %num) {
|
||
|
|
; CHECK-LABEL: @test_trip_multiple_5
|
||
|
|
; CHECK: Loop %for.body: backedge-taken count is (-1 + %num)
|
||
|
|
; CHECK-NEXT: Loop %for.body: max backedge-taken count is -2
|
||
|
|
; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
|
||
|
|
; CHECK: Loop %for.body: Trip multiple is 1
|
||
|
|
;
|
||
|
|
entry:
|
||
|
|
%u = urem i32 %num, 5
|
||
|
|
%cmp = icmp eq i32 %u, 0
|
||
|
|
tail call void @llvm.assume(i1 %cmp)
|
||
|
|
%cmp.1 = icmp uge i32 %num, 5
|
||
|
|
tail call void @llvm.assume(i1 %cmp.1)
|
||
|
|
br label %for.body
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
||
|
|
%inc = add nuw nsw i32 %i.010, 1
|
||
|
|
%cmp2 = icmp ult i32 %inc, %num
|
||
|
|
br i1 %cmp2, label %for.body, label %exit
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
declare void @llvm.assume(i1)
|