diff --git a/llvm/test/Transforms/LoopStrengthReduce/X86/lsr-expand-quadratic.ll b/llvm/test/Transforms/LoopStrengthReduce/X86/lsr-expand-quadratic.ll index deca954fea7892..8554e64bedd91b 100644 --- a/llvm/test/Transforms/LoopStrengthReduce/X86/lsr-expand-quadratic.ll +++ b/llvm/test/Transforms/LoopStrengthReduce/X86/lsr-expand-quadratic.ll @@ -1,3 +1,4 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; REQUIRES: x86-registered-target ; RUN: opt -loop-reduce -S < %s | FileCheck %s @@ -18,23 +19,30 @@ target triple = "x86_64-apple-macosx" ; loop. This recurrence depends on %sub.us, so can't be expanded. ; We cannot fold SCEVUnknown (sub.us) with recurrences since it is ; declared after the loop. -; -; CHECK-LABEL: @test2 -; CHECK-LABEL: test2.loop: -; CHECK: %lsr.iv1 = phi i32 [ %lsr.iv.next2, %test2.loop ], [ -16777216, %entry ] -; CHECK: %lsr.iv = phi i32 [ %lsr.iv.next, %test2.loop ], [ 1, %entry ] -; CHECK: %lsr.iv.next = add nsw i32 %lsr.iv, -1 -; CHECK: %lsr.iv.next2 = add nsw i32 %lsr.iv1, 16777216 -; -; CHECK-LABEL: for.end: -; CHECK: %tobool.us = icmp eq i32 %lsr.iv.next, 0 -; CHECK: %sub.us = select i1 %tobool.us, i32 0, i32 0 -; CHECK: %0 = sub i32 0, %sub.us -; CHECK: %1 = sub i32 %0, %lsr.iv.next -; CHECK: %sext.us = mul i32 %lsr.iv.next2, %1 -; CHECK: %f = ashr i32 %sext.us, 24 -; CHECK: ret i32 %f define i32 @test2() { +; CHECK-LABEL: @test2( +; CHECK-NEXT: entry: +; CHECK-NEXT: br label [[TEST2_LOOP:%.*]] +; CHECK: test2.loop: +; CHECK-NEXT: [[LSR_IV1:%.*]] = phi i32 [ [[LSR_IV_NEXT2:%.*]], [[TEST2_LOOP]] ], [ -16777216, [[ENTRY:%.*]] ] +; CHECK-NEXT: [[LSR_IV:%.*]] = phi i32 [ [[LSR_IV_NEXT:%.*]], [[TEST2_LOOP]] ], [ 1, [[ENTRY]] ] +; CHECK-NEXT: [[INC1115_US:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[INC11_US:%.*]], [[TEST2_LOOP]] ] +; CHECK-NEXT: [[INC11_US]] = add nsw i32 [[INC1115_US]], 1 +; CHECK-NEXT: [[LSR_IV_NEXT]] = add nsw i32 [[LSR_IV]], -1 +; CHECK-NEXT: [[LSR_IV_NEXT2]] = add nsw i32 [[LSR_IV1]], 16777216 +; CHECK-NEXT: [[CMP_US:%.*]] = icmp slt i32 [[INC11_US]], 2 +; CHECK-NEXT: br i1 [[CMP_US]], label [[TEST2_LOOP]], label [[FOR_END:%.*]] +; CHECK: for.end: +; CHECK-NEXT: [[TOBOOL_US:%.*]] = icmp eq i32 [[LSR_IV_NEXT]], 0 +; CHECK-NEXT: [[SUB_US:%.*]] = select i1 [[TOBOOL_US]], i32 0, i32 0 +; CHECK-NEXT: [[TMP0:%.*]] = sub i32 0, [[SUB_US]] +; CHECK-NEXT: [[TMP1:%.*]] = sub i32 [[TMP0]], [[LSR_IV_NEXT]] +; CHECK-NEXT: [[SEXT_US:%.*]] = mul i32 [[LSR_IV_NEXT2]], [[TMP1]] +; CHECK-NEXT: [[F:%.*]] = ashr i32 [[SEXT_US]], 24 +; CHECK-NEXT: br label [[EXIT:%.*]] +; CHECK: exit: +; CHECK-NEXT: ret i32 [[F]] +; entry: br label %test2.loop