[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 8a0897b972de39f92f801dc5a948d0e8d6f02833..e0ff07baae7cc3635889b9c183785070c62ee8e6 100644 (file)
--- a/test/Transforms/InstCombine/div.ll
+++ b/test/Transforms/InstCombine/div.ll
@@ -5,7 +5,7 @@
 define i32 @test1(i32 %A) {
         %B = sdiv i32 %A, 1             ; <i32> [#uses=1]
         ret i32 %B
-; CHECK: @test1
+; CHECK-LABEL: @test1(
 ; CHECK-NEXT: ret i32 %A
 }
 
@@ -13,7 +13,7 @@ define i32 @test2(i32 %A) {
         ; => Shift
         %B = udiv i32 %A, 8             ; <i32> [#uses=1]
         ret i32 %B
-; CHECK: @test2
+; CHECK-LABEL: @test2(
 ; CHECK-NEXT: lshr i32 %A, 3
 }
 
@@ -21,7 +21,7 @@ define i32 @test3(i32 %A) {
         ; => 0, don't need to keep traps
         %B = sdiv i32 0, %A             ; <i32> [#uses=1]
         ret i32 %B
-; CHECK: @test3
+; CHECK-LABEL: @test3(
 ; CHECK-NEXT: ret i32 0
 }
 
@@ -29,7 +29,7 @@ define i32 @test4(i32 %A) {
         ; 0-A
         %B = sdiv i32 %A, -1            ; <i32> [#uses=1]
         ret i32 %B
-; CHECK: @test4
+; CHECK-LABEL: @test4(
 ; CHECK-NEXT: sub i32 0, %A
 }
 
@@ -37,7 +37,7 @@ define i32 @test5(i32 %A) {
         %B = udiv i32 %A, -16           ; <i32> [#uses=1]
         %C = udiv i32 %B, -4            ; <i32> [#uses=1]
         ret i32 %C
-; CHECK: @test5
+; CHECK-LABEL: @test5(
 ; CHECK-NEXT: ret i32 0
 }
 
@@ -46,7 +46,7 @@ define i1 @test6(i32 %A) {
         ; A < 123
         %C = icmp eq i32 %B, 0          ; <i1> [#uses=1]
         ret i1 %C
-; CHECK: @test6
+; CHECK-LABEL: @test6(
 ; CHECK-NEXT: icmp ult i32 %A, 123
 }
 
@@ -55,7 +55,7 @@ define i1 @test7(i32 %A) {
         ; A >= 20 && A < 30
         %C = icmp eq i32 %B, 2          ; <i1> [#uses=1]
         ret i1 %C
-; CHECK: @test7
+; CHECK-LABEL: @test7(
 ; CHECK-NEXT: add i32 %A, -20
 ; CHECK-NEXT: icmp ult i32
 }
@@ -65,7 +65,7 @@ define i1 @test8(i8 %A) {
         ; A >= 246
         %C = icmp eq i8 %B, 2           ; <i1> [#uses=1]
         ret i1 %C
-; CHECK: @test8
+; CHECK-LABEL: @test8(
 ; CHECK-NEXT: icmp ugt i8 %A, -11
 }
 
@@ -74,7 +74,7 @@ define i1 @test9(i8 %A) {
         ; A < 246
         %C = icmp ne i8 %B, 2           ; <i1> [#uses=1]
         ret i1 %C
-; CHECK: @test9
+; CHECK-LABEL: @test9(
 ; CHECK-NEXT: icmp ult i8 %A, -10
 }
 
@@ -82,7 +82,7 @@ define i32 @test10(i32 %X, i1 %C) {
         %V = select i1 %C, i32 64, i32 8                ; <i32> [#uses=1]
         %R = udiv i32 %X, %V            ; <i32> [#uses=1]
         ret i32 %R
-; CHECK: @test10
+; CHECK-LABEL: @test10(
 ; CHECK-NEXT: select i1 %C, i32 6, i32 3
 ; CHECK-NEXT: lshr i32 %X
 }
@@ -91,7 +91,7 @@ define i32 @test11(i32 %X, i1 %C) {
         %A = select i1 %C, i32 1024, i32 32             ; <i32> [#uses=1]
         %B = udiv i32 %X, %A            ; <i32> [#uses=1]
         ret i32 %B
-; CHECK: @test11
+; CHECK-LABEL: @test11(
 ; CHECK-NEXT: select i1 %C, i32 10, i32 5
 ; CHECK-NEXT: lshr i32 %X
 }
@@ -100,14 +100,14 @@ define i32 @test11(i32 %X, i1 %C) {
 define i32 @test12(i32 %x) nounwind  {
        %tmp3 = udiv i32 %x, %x         ; 1
        ret i32 %tmp3
-; CHECK: @test12
+; CHECK-LABEL: @test12(
 ; CHECK-NEXT: ret i32 1
 }
 
 define i32 @test13(i32 %x) nounwind  {
        %tmp3 = sdiv i32 %x, %x         ; 1
        ret i32 %tmp3
-; CHECK: @test13
+; CHECK-LABEL: @test13(
 ; CHECK-NEXT: ret i32 1
 }
 
@@ -115,7 +115,7 @@ define i32 @test14(i8 %x) nounwind {
        %zext = zext i8 %x to i32
        %div = udiv i32 %zext, 257      ; 0
        ret i32 %div
-; CHECK: @test14
+; CHECK-LABEL: @test14(
 ; CHECK-NEXT: ret i32 0
 }
 
@@ -125,10 +125,203 @@ define i32 @test15(i32 %a, i32 %b) nounwind {
   %div = lshr i32 %shl, 2
   %div2 = udiv i32 %a, %div
   ret i32 %div2
-; CHECK: @test15
+; CHECK-LABEL: @test15(
 ; CHECK-NEXT: add i32 %b, -2
 ; CHECK-NEXT: lshr i32 %a, 
 ; CHECK-NEXT: ret i32
 }
 
+define <2 x i64> @test16(<2 x i64> %x) nounwind {
+  %shr = lshr <2 x i64> %x, <i64 5, i64 5>
+  %div = udiv <2 x i64> %shr, <i64 6, i64 6>
+  ret <2 x i64> %div
+; CHECK-LABEL: @test16(
+; CHECK-NEXT: udiv <2 x i64> %x, <i64 192, i64 192>
+; CHECK-NEXT: ret <2 x i64>
+}
+
+define <2 x i64> @test17(<2 x i64> %x) nounwind {
+  %neg = sub nsw <2 x i64> zeroinitializer, %x
+  %div = sdiv <2 x i64> %neg, <i64 3, i64 4>
+  ret <2 x i64> %div
+; CHECK-LABEL: @test17(
+; CHECK-NEXT: sdiv <2 x i64> %x, <i64 -3, i64 -4>
+; CHECK-NEXT: ret <2 x i64>
+}
+
+define <2 x i64> @test18(<2 x i64> %x) nounwind {
+  %div = sdiv <2 x i64> %x, <i64 -1, i64 -1>
+  ret <2 x i64> %div
+; CHECK-LABEL: @test18(
+; CHECK-NEXT: sub <2 x i64> zeroinitializer, %x
+; CHECK-NEXT: ret <2 x i64>
+}
+
+define i32 @test19(i32 %x) {
+  %A = udiv i32 1, %x
+  ret i32 %A
+; CHECK-LABEL: @test19(
+; CHECK-NEXT: icmp eq i32 %x, 1
+; CHECK-NEXT: zext i1 %{{.*}} to i32
+; CHECK-NEXT ret i32
+}
+
+define i32 @test20(i32 %x) {
+  %A = sdiv i32 1, %x
+  ret i32 %A
+; CHECK-LABEL: @test20(
+; CHECK-NEXT: add i32 %x, 1
+; CHECK-NEXT: icmp ult i32 %{{.*}}, 3
+; CHECK-NEXT: select i1 %{{.*}}, i32 %x, i32 {{.*}}
+; CHECK-NEXT: ret i32
+}
+
+define i32 @test21(i32 %a) {
+  %shl = shl nsw i32 %a, 2
+  %div = sdiv i32 %shl, 12
+  ret i32 %div
+; CHECK-LABEL: @test21(
+; CHECK-NEXT: %div = sdiv i32 %a, 3
+; CHECK-NEXT: ret i32 %div
+}
 
+define i32 @test22(i32 %a) {
+  %mul = mul nsw i32 %a, 3
+  %div = sdiv i32 %mul, 12
+  ret i32 %div
+; CHECK-LABEL: @test22(
+; CHECK-NEXT: %div = sdiv i32 %a, 4
+; CHECK-NEXT: ret i32 %div
+}
+
+define i32 @test23(i32 %a) {
+  %shl = shl nuw i32 %a, 2
+  %div = udiv i32 %shl, 12
+  ret i32 %div
+; CHECK-LABEL: @test23(
+; CHECK-NEXT: %div = udiv i32 %a, 3
+; CHECK-NEXT: ret i32 %div
+}
+
+define i32 @test24(i32 %a) {
+  %mul = mul nuw i32 %a, 3
+  %div = udiv i32 %mul, 12
+  ret i32 %div
+; CHECK-LABEL: @test24(
+; CHECK-NEXT: %div = lshr i32 %a, 2
+; CHECK-NEXT: ret i32 %div
+}
+
+define i32 @test25(i32 %a) {
+  %shl = shl nsw i32 %a, 2
+  %div = sdiv i32 %shl, 2
+  ret i32 %div
+; CHECK-LABEL: @test25(
+; CHECK-NEXT: %div = shl nsw i32 %a, 1
+; CHECK-NEXT: ret i32 %div
+}
+
+define i32 @test26(i32 %a) {
+  %mul = mul nsw i32 %a, 12
+  %div = sdiv i32 %mul, 3
+  ret i32 %div
+; CHECK-LABEL: @test26(
+; CHECK-NEXT: %div = shl nsw i32 %a, 2
+; CHECK-NEXT: ret i32 %div
+}
+
+define i32 @test27(i32 %a) {
+  %shl = shl nuw i32 %a, 2
+  %div = udiv i32 %shl, 2
+  ret i32 %div
+; CHECK-LABEL: @test27(
+; CHECK-NEXT: %div = shl nuw i32 %a, 1
+; CHECK-NEXT: ret i32 %div
+}
+
+define i32 @test28(i32 %a) {
+  %mul = mul nuw i32 %a, 36
+  %div = udiv i32 %mul, 3
+  ret i32 %div
+; CHECK-LABEL: @test28(
+; CHECK-NEXT: %div = mul nuw i32 %a, 12
+; CHECK-NEXT: ret i32 %div
+}
+
+define i32 @test29(i32 %a) {
+  %mul = shl nsw i32 %a, 31
+  %div = sdiv i32 %mul, -2147483648
+  ret i32 %div
+; CHECK-LABEL: @test29(
+; CHECK-NEXT: %[[and:.*]] = and i32 %a, 1
+; CHECK-NEXT: ret i32 %[[and]]
+}
+
+define i32 @test30(i32 %a) {
+  %mul = shl nuw i32 %a, 31
+  %div = udiv i32 %mul, -2147483648
+  ret i32 %div
+; CHECK-LABEL: @test30(
+; CHECK-NEXT: ret i32 %a
+}
+
+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
+; CHECK-LABEL: @test31(
+; CHECK-NEXT: %[[shr:.*]] = lshr <2 x i32> %x, <i32 31, i32 31>
+; 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]]
+}