[PATCH] D149570: [ValueTracking] Add another test for `isSafeToSpeculate` for sdiv/srem; NFC

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n created this revision.
goldstein.w.n added reviewers: nikic, spatel, StephenFan.
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goldstein.w.n requested review of this revision.
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Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D149570

Files:
  llvm/test/Transforms/LICM/speculate-div.ll


Index: llvm/test/Transforms/LICM/speculate-div.ll
===================================================================
--- llvm/test/Transforms/LICM/speculate-div.ll
+++ llvm/test/Transforms/LICM/speculate-div.ll
@@ -92,6 +92,29 @@
   br label %loop
 }
 
+define void @srem_ok3(i16 %nn, i16 %xx) {
+; CHECK-LABEL: @srem_ok3(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[N:%.*]] = and i16 [[NN:%.*]], 123
+; CHECK-NEXT:    [[X:%.*]] = add nuw nsw i16 [[XX:%.*]], 1
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    call void @maythrow()
+; CHECK-NEXT:    [[DIV:%.*]] = srem i16 [[N]], [[X]]
+; CHECK-NEXT:    call void @use(i16 [[DIV]])
+; CHECK-NEXT:    br label [[LOOP]]
+;
+entry:
+  %n = and i16 %nn, 123
+  %x = add nuw nsw i16 %xx, 1
+  br label %loop
+loop:
+  call void @maythrow()
+  %div = srem i16 %n, %x
+  call void @use(i16 %div)
+  br label %loop
+}
+
 define void @udiv_not_ok(i16 %n, i16 %xx) {
 ; CHECK-LABEL: @udiv_not_ok(
 ; CHECK-NEXT:  entry:


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