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-rw-r--r--test/Transforms/InstCombine/div.ll43
1 files changed, 41 insertions, 2 deletions
diff --git a/test/Transforms/InstCombine/div.ll b/test/Transforms/InstCombine/div.ll
index 2841043..e0ff07b 100644
--- a/test/Transforms/InstCombine/div.ll
+++ b/test/Transforms/InstCombine/div.ll
@@ -217,7 +217,7 @@ define i32 @test25(i32 %a) {
%div = sdiv i32 %shl, 2
ret i32 %div
; CHECK-LABEL: @test25(
-; CHECK-NEXT: %div = shl i32 %a, 1
+; CHECK-NEXT: %div = shl nsw i32 %a, 1
; CHECK-NEXT: ret i32 %div
}
@@ -226,7 +226,7 @@ define i32 @test26(i32 %a) {
%div = sdiv i32 %mul, 3
ret i32 %div
; CHECK-LABEL: @test26(
-; CHECK-NEXT: %div = shl i32 %a, 2
+; CHECK-NEXT: %div = shl nsw i32 %a, 2
; CHECK-NEXT: ret i32 %div
}
@@ -286,3 +286,42 @@ define i32 @test32(i32 %a, i32 %b) {
; CHECK-NEXT: %[[div:.*]] = udiv i32 %a, %[[shr]]
; CHECK-NEXT: ret i32
}
+
+define <2 x i64> @test33(<2 x i64> %x) nounwind {
+ %shr = lshr exact <2 x i64> %x, <i64 5, i64 5>
+ %div = udiv exact <2 x i64> %shr, <i64 6, i64 6>
+ ret <2 x i64> %div
+; CHECK-LABEL: @test33(
+; CHECK-NEXT: udiv exact <2 x i64> %x, <i64 192, i64 192>
+; CHECK-NEXT: ret <2 x i64>
+}
+
+define <2 x i64> @test34(<2 x i64> %x) nounwind {
+ %neg = sub nsw <2 x i64> zeroinitializer, %x
+ %div = sdiv exact <2 x i64> %neg, <i64 3, i64 4>
+ ret <2 x i64> %div
+; CHECK-LABEL: @test34(
+; CHECK-NEXT: sdiv exact <2 x i64> %x, <i64 -3, i64 -4>
+; CHECK-NEXT: ret <2 x i64>
+}
+
+define i32 @test35(i32 %A) {
+ %and = and i32 %A, 2147483647
+ %mul = sdiv exact i32 %and, 2147483647
+ ret i32 %mul
+; CHECK-LABEL: @test35(
+; CHECK-NEXT: %[[and:.*]] = and i32 %A, 2147483647
+; CHECK-NEXT: %[[udiv:.*]] = udiv exact i32 %[[and]], 2147483647
+; CHECK-NEXT: ret i32 %[[udiv]]
+}
+
+define i32 @test36(i32 %A) {
+ %and = and i32 %A, 2147483647
+ %shl = shl nsw i32 1, %A
+ %mul = sdiv exact i32 %and, %shl
+ ret i32 %mul
+; CHECK-LABEL: @test36(
+; CHECK-NEXT: %[[and:.*]] = and i32 %A, 2147483647
+; CHECK-NEXT: %[[shr:.*]] = lshr exact i32 %[[and]], %A
+; CHECK-NEXT: ret i32 %[[shr]]
+}