[InstCombine] Add a new formula for SMIN.

[oota-llvm.git] / test / Transforms / InstCombine / div.ll

diff --git a/test/Transforms/InstCombine/div.ll b/test/Transforms/InstCombine/div.ll
index f2a70fd0f0d94c68b9c3bd91c8aa5d2e72fc095b..e0ff07baae7cc3635889b9c183785070c62ee8e6 100644 (file)
--- 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
 }
 
@@ -265,7 +265,7 @@ define i32 @test30(i32 %a) {
 ; CHECK-NEXT: ret i32 %a
 }
 
-define <2 x i32> @test31(<2 x i32> %x) nounwind {
+define <2 x i32> @test31(<2 x i32> %x) {
   %shr = lshr <2 x i32> %x, <i32 31, i32 31>
   %div = udiv <2 x i32> %shr, <i32 2147483647, i32 2147483647>
   ret <2 x i32> %div
@@ -274,3 +274,54 @@ define <2 x i32> @test31(<2 x i32> %x) nounwind {
 ; CHECK-NEXT: udiv <2 x i32> %[[shr]], <i32 2147483647, i32 2147483647>
 ; CHECK-NEXT: ret <2 x i32>
 }
+
+define i32 @test32(i32 %a, i32 %b) {
+  %shl = shl i32 2, %b
+  %div = lshr i32 %shl, 2
+  %div2 = udiv i32 %a, %div
+  ret i32 %div2
+; CHECK-LABEL: @test32(
+; CHECK-NEXT: %[[shl:.*]] = shl i32 2, %b
+; CHECK-NEXT: %[[shr:.*]] = lshr i32 %[[shl]], 2
+; 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]]
+}