47 lines
1.7 KiB
LLVM
47 lines
1.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
|
|
; RUN: opt -p loop-unroll -unroll-full-max-count=0 -S %s | FileCheck %s
|
|
|
|
declare void @foo()
|
|
|
|
define void @test_peel_last_pointer_induction(ptr %src, i64 %offset) {
|
|
; CHECK-LABEL: define void @test_peel_last_pointer_induction(
|
|
; CHECK-SAME: ptr [[SRC:%.*]], i64 [[OFFSET:%.*]]) {
|
|
; CHECK-NEXT: [[ENTRY:.*]]:
|
|
; CHECK-NEXT: [[END:%.*]] = getelementptr i8, ptr [[SRC]], i64 [[OFFSET]]
|
|
; CHECK-NEXT: br label %[[LOOP_HEADER:.*]]
|
|
; CHECK: [[LOOP_HEADER]]:
|
|
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[SRC]], %[[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], %[[LOOP_LATCH:.*]] ]
|
|
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr nusw i8, ptr [[PTR_IV]], i64 1
|
|
; CHECK-NEXT: [[CMP3_NOT:%.*]] = icmp eq ptr [[PTR_IV_NEXT]], [[END]]
|
|
; CHECK-NEXT: br i1 [[CMP3_NOT]], label %[[LOOP_LATCH]], label %[[THEN:.*]]
|
|
; CHECK: [[THEN]]:
|
|
; CHECK-NEXT: call void @foo()
|
|
; CHECK-NEXT: br label %[[LOOP_LATCH]]
|
|
; CHECK: [[LOOP_LATCH]]:
|
|
; CHECK-NEXT: [[EC:%.*]] = icmp eq ptr [[PTR_IV_NEXT]], [[END]]
|
|
; CHECK-NEXT: br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP_HEADER]]
|
|
; CHECK: [[EXIT]]:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%end = getelementptr i8, ptr %src, i64 %offset
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%ptr.iv = phi ptr [ %src, %entry ], [ %ptr.iv.next, %loop.latch ]
|
|
%ptr.iv.next = getelementptr nusw i8, ptr %ptr.iv, i64 1
|
|
%cmp3.not = icmp eq ptr %ptr.iv.next, %end
|
|
br i1 %cmp3.not, label %loop.latch, label %then
|
|
|
|
then:
|
|
call void @foo()
|
|
br label %loop.latch
|
|
|
|
loop.latch:
|
|
%ec = icmp eq ptr %ptr.iv.next, %end
|
|
br i1 %ec, label %exit, label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|