[InstCombine] Merged two test files and regenerated checks using update_test_checks.py. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281478 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 49 insertions, 0 deletions

diff --git a/test/Transforms/InstCombine/udiv-simplify.ll b/test/Transforms/InstCombine/udiv-simplify.ll
new file mode 100644
index 00000000000..296821f704c
--- /dev/null
+++ b/test/Transforms/InstCombine/udiv-simplify.ll
@@ -0,0 +1,49 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+define i64 @test1(i32 %x) nounwind {
+; CHECK-LABEL: @test1(
+; CHECK-NEXT:    ret i64 0
+;
+  %y = lshr i32 %x, 1
+  %r = udiv i32 %y, -1
+  %z = sext i32 %r to i64
+  ret i64 %z
+}
+define i64 @test2(i32 %x) nounwind {
+; CHECK-LABEL: @test2(
+; CHECK-NEXT:    ret i64 0
+;
+  %y = lshr i32 %x, 31
+  %r = udiv i32 %y, 3
+  %z = sext i32 %r to i64
+  ret i64 %z
+}
+
+; The udiv instructions shouldn't be optimized away, and the
+; sext instructions should be optimized to zext.
+
+define i64 @test1_PR2274(i32 %x, i32 %g) nounwind {
+; CHECK-LABEL: @test1_PR2274(
+; CHECK-NEXT:    [[Y:%.*]] = lshr i32 %x, 30
+; CHECK-NEXT:    [[R:%.*]] = udiv i32 [[Y]], %g
+; CHECK-NEXT:    [[Z1:%.*]] = zext i32 [[R]] to i64
+; CHECK-NEXT:    ret i64 [[Z1]]
+;
+  %y = lshr i32 %x, 30
+  %r = udiv i32 %y, %g
+  %z = sext i32 %r to i64
+  ret i64 %z
+}
+define i64 @test2_PR2274(i32 %x, i32 %v) nounwind {
+; CHECK-LABEL: @test2_PR2274(
+; CHECK-NEXT:    [[Y:%.*]] = lshr i32 %x, 31
+; CHECK-NEXT:    [[R:%.*]] = udiv i32 [[Y]], %v
+; CHECK-NEXT:    [[Z1:%.*]] = zext i32 [[R]] to i64
+; CHECK-NEXT:    ret i64 [[Z1]]
+;
+  %y = lshr i32 %x, 31
+  %r = udiv i32 %y, %v
+  %z = sext i32 %r to i64
+  ret i64 %z
+}