72effd8d5b
This is in preparation for enabling proper handling of optnone under the NPM. Most optimizations won't run on an optnone function. Previously the test would rely on lots of optimizations to optimize the IR into a simple infinite loop. This is an optnone function, so clearly that shouldn't be the case. This IR was found by printing the module before the LoopFullUnrollerPass ran. Reviewed By: asbirlea Differential Revision: https://reviews.llvm.org/D85578
49 lines
1.8 KiB
LLVM
49 lines
1.8 KiB
LLVM
; RUN: opt -passes='loop-unroll-full' -disable-verify --mtriple x86_64-pc-linux-gnu -S -o - %s | FileCheck %s
|
|
|
|
; This checks that the loop full unroller will fire in the new pass manager
|
|
; when forced via #pragma in the source (or annotation in the code).
|
|
|
|
; Completely unroll the inner loop
|
|
; CHECK-LABEL: @foo
|
|
; CHECK: br i1
|
|
; CHECK-NOT: br i1
|
|
|
|
; Function Attrs: noinline nounwind optnone uwtable
|
|
define void @foo() local_unnamed_addr #0 {
|
|
bb:
|
|
%tmp = alloca [5 x i32*], align 16
|
|
br label %bb7.preheader
|
|
|
|
bb3.loopexit: ; preds = %bb10
|
|
%spec.select.lcssa = phi i32 [ %spec.select, %bb10 ]
|
|
%tmp5.not = icmp eq i32 %spec.select.lcssa, 0
|
|
br i1 %tmp5.not, label %bb24, label %bb7.preheader
|
|
|
|
bb7.preheader: ; preds = %bb3.loopexit, %bb
|
|
%tmp1.06 = phi i32 [ 5, %bb ], [ %spec.select.lcssa, %bb3.loopexit ]
|
|
br label %bb10
|
|
|
|
bb10: ; preds = %bb10, %bb7.preheader
|
|
%indvars.iv = phi i64 [ 0, %bb7.preheader ], [ %indvars.iv.next, %bb10 ]
|
|
%tmp1.14 = phi i32 [ %tmp1.06, %bb7.preheader ], [ %spec.select, %bb10 ]
|
|
%tmp13 = getelementptr inbounds [5 x i32*], [5 x i32*]* %tmp, i64 0, i64 %indvars.iv
|
|
%tmp14 = load i32*, i32** %tmp13, align 8
|
|
%tmp15.not = icmp ne i32* %tmp14, null
|
|
%tmp18 = sext i1 %tmp15.not to i32
|
|
%spec.select = add nsw i32 %tmp1.14, %tmp18
|
|
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
|
|
%exitcond.not = icmp eq i64 %indvars.iv.next, 5
|
|
br i1 %exitcond.not, label %bb3.loopexit, label %bb10, !llvm.loop !1
|
|
|
|
bb24: ; preds = %bb3.loopexit
|
|
ret void
|
|
}
|
|
|
|
attributes #0 = { noinline nounwind optnone uwtable }
|
|
|
|
!llvm.module.flags = !{!0}
|
|
|
|
!0 = !{i32 1, !"wchar_size", i32 4}
|
|
!1 = distinct !{!1, !2}
|
|
!2 = !{!"llvm.loop.unroll.full"}
|