; RUN: opt < %s -instcombine -S | FileCheck %s
define i32 @test1(i32 %A) {
-; CHECK: @test1
+; CHECK-LABEL: @test1(
%B = mul i32 %A, 1 ; <i32> [#uses=1]
ret i32 %B
; CHECK: ret i32 %A
}
define i32 @test2(i32 %A) {
-; CHECK: @test2
+; CHECK-LABEL: @test2(
; Should convert to an add instruction
%B = mul i32 %A, 2 ; <i32> [#uses=1]
ret i32 %B
}
define i32 @test3(i32 %A) {
-; CHECK: @test3
+; CHECK-LABEL: @test3(
; This should disappear entirely
%B = mul i32 %A, 0 ; <i32> [#uses=1]
ret i32 %B
}
define double @test4(double %A) {
-; CHECK: @test4
+; CHECK-LABEL: @test4(
; This is safe for FP
%B = fmul double 1.000000e+00, %A ; <double> [#uses=1]
ret double %B
}
define i32 @test5(i32 %A) {
-; CHECK: @test5
+; CHECK-LABEL: @test5(
%B = mul i32 %A, 8 ; <i32> [#uses=1]
ret i32 %B
; CHECK: shl i32 %A, 3
}
define i8 @test6(i8 %A) {
-; CHECK: @test6
+; CHECK-LABEL: @test6(
%B = mul i8 %A, 8 ; <i8> [#uses=1]
%C = mul i8 %B, 8 ; <i8> [#uses=1]
ret i8 %C
}
define i32 @test7(i32 %i) {
-; CHECK: @test7
+; CHECK-LABEL: @test7(
%tmp = mul i32 %i, -1 ; <i32> [#uses=1]
ret i32 %tmp
; CHECK: sub i32 0, %i
}
define i64 @test8(i64 %i) {
-; CHECK: @test8
+; CHECK-LABEL: @test8(
%j = mul i64 %i, -1 ; <i64> [#uses=1]
ret i64 %j
; CHECK: sub i64 0, %i
}
define i32 @test9(i32 %i) {
-; CHECK: @test9
+; CHECK-LABEL: @test9(
%j = mul i32 %i, -1 ; <i32> [#uses=1]
ret i32 %j
; CHECK: sub i32 0, %i
}
define i32 @test10(i32 %a, i32 %b) {
-; CHECK: @test10
+; CHECK-LABEL: @test10(
%c = icmp slt i32 %a, 0 ; <i1> [#uses=1]
%d = zext i1 %c to i32 ; <i32> [#uses=1]
; e = b & (a >> 31)
}
define i32 @test11(i32 %a, i32 %b) {
-; CHECK: @test11
+; CHECK-LABEL: @test11(
%c = icmp sle i32 %a, -1 ; <i1> [#uses=1]
%d = zext i1 %c to i32 ; <i32> [#uses=1]
; e = b & (a >> 31)
}
define i32 @test12(i32 %a, i32 %b) {
-; CHECK: @test12
+; CHECK-LABEL: @test12(
%c = icmp ugt i32 %a, 2147483647 ; <i1> [#uses=1]
%d = zext i1 %c to i32 ; <i32> [#uses=1]
%e = mul i32 %d, %b ; <i32> [#uses=1]
; PR2642
define internal void @test13(<4 x float>*) {
-; CHECK: @test13
- load <4 x float>* %0, align 1
+; CHECK-LABEL: @test13(
+ load <4 x float>, <4 x float>* %0, align 1
fmul <4 x float> %2, < float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00 >
store <4 x float> %3, <4 x float>* %0, align 1
ret void
}
define <16 x i8> @test14(<16 x i8> %a) {
-; CHECK: @test14
+; CHECK-LABEL: @test14(
%b = mul <16 x i8> %a, zeroinitializer
ret <16 x i8> %b
; CHECK-NEXT: ret <16 x i8> zeroinitializer
; rdar://7293527
define i32 @test15(i32 %A, i32 %B) {
-; CHECK: @test15
+; CHECK-LABEL: @test15(
entry:
%shl = shl i32 1, %B
%m = mul i32 %shl, %A
; X * Y (when Y is 0 or 1) --> x & (0-Y)
define i32 @test16(i32 %b, i1 %c) {
-; CHECK: @test16
+; CHECK-LABEL: @test16(
%d = zext i1 %c to i32 ; <i32> [#uses=1]
; e = b & (a >> 31)
%e = mul i32 %d, %b ; <i32> [#uses=1]
; X * Y (when Y is 0 or 1) --> x & (0-Y)
define i32 @test17(i32 %a, i32 %b) {
-; CHECK: @test17
+; CHECK-LABEL: @test17(
%a.lobit = lshr i32 %a, 31
%e = mul i32 %a.lobit, %b
ret i32 %e
}
define i32 @test18(i32 %A, i32 %B) {
-; CHECK: @test18
+; CHECK-LABEL: @test18(
%C = and i32 %A, 1
%D = and i32 %B, 1
declare void @use(i1)
define i32 @test19(i32 %A, i32 %B) {
-; CHECK: @test19
+; CHECK-LABEL: @test19(
%C = and i32 %A, 1
%D = and i32 %B, 1
ret i32 %H
; CHECK: ret i32 0
}
+
+define <2 x i64> @test20(<2 x i64> %A) {
+; CHECK-LABEL: @test20(
+ %B = add <2 x i64> %A, <i64 12, i64 14>
+ %C = mul <2 x i64> %B, <i64 3, i64 2>
+ ret <2 x i64> %C
+; CHECK: mul <2 x i64> %A, <i64 3, i64 2>
+; CHECK: add <2 x i64> %{{.}}, <i64 36, i64 28>
+}
+
+define <2 x i1> @test21(<2 x i1> %A, <2 x i1> %B) {
+; CHECK-LABEL: @test21(
+ %C = mul <2 x i1> %A, %B
+ ret <2 x i1> %C
+; CHECK: %C = and <2 x i1> %A, %B
+}
+
+define i32 @test22(i32 %A) {
+; CHECK-LABEL: @test22(
+ %B = mul nsw i32 %A, -1
+ ret i32 %B
+; CHECK: sub nsw i32 0, %A
+}
+
+define i32 @test23(i32 %A) {
+; CHECK-LABEL: @test23(
+ %B = shl nuw i32 %A, 1
+ %C = mul nuw i32 %B, 3
+ ret i32 %C
+; CHECK: mul nuw i32 %A, 6
+}
+
+define i32 @test24(i32 %A) {
+; CHECK-LABEL: @test24(
+ %B = shl nsw i32 %A, 1
+ %C = mul nsw i32 %B, 3
+ ret i32 %C
+; CHECK: mul nsw i32 %A, 6
+}
+
+define i32 @test25(i32 %A, i32 %B) {
+; CHECK-LABEL: @test25(
+ %C = sub nsw i32 0, %A
+ %D = sub nsw i32 0, %B
+ %E = mul nsw i32 %C, %D
+ ret i32 %E
+; CHECK: mul nsw i32 %A, %B
+}
+
+define i32 @test26(i32 %A, i32 %B) {
+; CHECK-LABEL: @test26(
+ %C = shl nsw i32 1, %B
+ %D = mul nsw i32 %A, %C
+ ret i32 %D
+; CHECK: shl nsw i32 %A, %B
+}
+
+define i32 @test27(i32 %A, i32 %B) {
+; CHECK-LABEL: @test27(
+ %C = shl i32 1, %B
+ %D = mul nuw i32 %A, %C
+ ret i32 %D
+; CHECK: shl nuw i32 %A, %B
+}
+
+define i32 @test28(i32 %A) {
+; CHECK-LABEL: @test28(
+ %B = shl i32 1, %A
+ %C = mul nsw i32 %B, %B
+ ret i32 %C
+; CHECK: %[[shl1:.*]] = shl i32 1, %A
+; CHECK-NEXT: %[[shl2:.*]] = shl i32 %[[shl1]], %A
+; CHECK-NEXT: ret i32 %[[shl2]]
+}
+
+define i64 @test29(i31 %A, i31 %B) {
+; CHECK-LABEL: @test29(
+ %C = sext i31 %A to i64
+ %D = sext i31 %B to i64
+ %E = mul i64 %C, %D
+ ret i64 %E
+; CHECK: %[[sext1:.*]] = sext i31 %A to i64
+; CHECK-NEXT: %[[sext2:.*]] = sext i31 %B to i64
+; CHECK-NEXT: %[[mul:.*]] = mul nsw i64 %[[sext1]], %[[sext2]]
+; CHECK-NEXT: ret i64 %[[mul]]
+}
+
+define i64 @test30(i32 %A, i32 %B) {
+; CHECK-LABEL: @test30(
+ %C = zext i32 %A to i64
+ %D = zext i32 %B to i64
+ %E = mul i64 %C, %D
+ ret i64 %E
+; CHECK: %[[zext1:.*]] = zext i32 %A to i64
+; CHECK-NEXT: %[[zext2:.*]] = zext i32 %B to i64
+; CHECK-NEXT: %[[mul:.*]] = mul nuw i64 %[[zext1]], %[[zext2]]
+; CHECK-NEXT: ret i64 %[[mul]]
+}
+
+@PR22087 = external global i32
+define i32 @test31(i32 %V) {
+; CHECK-LABEL: @test31
+ %mul = mul i32 %V, shl (i32 1, i32 zext (i1 icmp ne (i32* inttoptr (i64 1 to i32*), i32* @PR22087) to i32))
+ ret i32 %mul
+; CHECK: %[[mul:.*]] = shl i32 %V, zext (i1 icmp ne (i32* inttoptr (i64 1 to i32*), i32* @PR22087) to i32)
+; CHECK-NEXT: ret i32 %[[mul]]
+}
+
+define i32 @test32(i32 %X) {
+; CHECK-LABEL: @test32
+ %mul = mul nsw i32 %X, -2147483648
+ ret i32 %mul
+; CHECK: %[[shl:.*]] = shl i32 %X, 31
+; CHECK-NEXT: ret i32 %[[shl]]
+}
+
+define i32 @test33(i32 %X) {
+; CHECK-LABEL: @test33
+ %mul = mul nsw i32 %X, 1073741824
+; CHECK: %[[shl:.*]] = shl nsw i32 %X, 30
+; CHECK-NEXT: ret i32 %[[shl]]
+ ret i32 %mul
+}