34d380e1f6
We usually only check direct use instruction of IV, while the bitcast of 'ptrtoint ptr to i64' doesn't affect the result, so go a step further. Fix https://github.com/llvm/llvm-project/issues/59633. Reviewed By: markoshorro Differential Revision: https://reviews.llvm.org/D151877
30 lines
1.0 KiB
LLVM
30 lines
1.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt < %s -passes=indvars -S | FileCheck %s
|
|
|
|
declare void @foo(i64 noundef)
|
|
|
|
; Function Attrs: mustprogress noreturn uwtable
|
|
define void @pr59633(ptr noundef %ptr) {
|
|
; CHECK-LABEL: @pr59633(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[PTR1:%.*]] = ptrtoint ptr [[PTR:%.*]] to i64
|
|
; CHECK-NEXT: [[TMP0:%.*]] = trunc i64 [[PTR1]] to i4
|
|
; CHECK-NEXT: [[TMP1:%.*]] = zext i4 [[TMP0]] to i64
|
|
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
|
|
; CHECK: while.body:
|
|
; CHECK-NEXT: tail call void @foo(i64 noundef [[TMP1]])
|
|
; CHECK-NEXT: br label [[WHILE_BODY]]
|
|
;
|
|
entry:
|
|
br label %while.body
|
|
|
|
while.body: ; preds = %entry, %while.body
|
|
%ptr.addr.0 = phi ptr [ %ptr, %entry ], [ %add.ptr, %while.body ]
|
|
%0 = ptrtoint ptr %ptr.addr.0 to i64
|
|
%and = and i64 %0, 15 ; loop invariant
|
|
tail call void @foo(i64 noundef %and)
|
|
%add.ptr = getelementptr inbounds i8, ptr %ptr.addr.0, i64 16
|
|
br label %while.body
|
|
}
|
|
|