; This test makes sure that mul instructions are properly eliminated.
-;
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep mul
-; RUN: if as < %s | opt -instcombine | dis | grep mul
-; RUN: then exit 1
-; RUN: else exit 0
-; RUN: fi
+define i32 @test1(i32 %A) {
+ %B = mul i32 %A, 1 ; <i32> [#uses=1]
+ ret i32 %B
+}
+
+define i32 @test2(i32 %A) {
+ ; Should convert to an add instruction
+ %B = mul i32 %A, 2 ; <i32> [#uses=1]
+ ret i32 %B
+}
+
+define i32 @test3(i32 %A) {
+ ; This should disappear entirely
+ %B = mul i32 %A, 0 ; <i32> [#uses=1]
+ ret i32 %B
+}
+
+define double @test4(double %A) {
+ ; This is safe for FP
+ %B = mul double 1.000000e+00, %A ; <double> [#uses=1]
+ ret double %B
+}
-implementation
+define i32 @test5(i32 %A) {
+ %B = mul i32 %A, 8 ; <i32> [#uses=1]
+ ret i32 %B
+}
-int %test1(int %A) {
- %B = mul int %A, 1
- ret int %B
+define i8 @test6(i8 %A) {
+ %B = mul i8 %A, 8 ; <i8> [#uses=1]
+ %C = mul i8 %B, 8 ; <i8> [#uses=1]
+ ret i8 %C
}
-int %test2(int %A) {
- %B = mul int %A, 2 ; Should convert to an add instruction
- ret int %B
+define i32 @test7(i32 %i) {
+ %tmp = mul i32 %i, -1 ; <i32> [#uses=1]
+ ret i32 %tmp
}
-int %test3(int %A) {
- %B = mul int %A, 0 ; This should disappear entirely
- ret int %B
+define i64 @test8(i64 %i) {
+ ; tmp = sub 0, %i
+ %j = mul i64 %i, -1 ; <i64> [#uses=1]
+ ret i64 %j
}
-double %test4(double %A) {
- %B = mul double 1.0, %A ; This is safe for FP
- ret double %B
+define i32 @test9(i32 %i) {
+ ; %j = sub 0, %i
+ %j = mul i32 %i, -1 ; <i32> [#uses=1]
+ ret i32 %j
}
-int %test5(int %A) {
- %B = mul int %A, 8
- ret int %B
+define i32 @test10(i32 %a, i32 %b) {
+ %c = icmp slt i32 %a, 0 ; <i1> [#uses=1]
+ %d = zext i1 %c to i32 ; <i32> [#uses=1]
+ ; e = b & (a >> 31)
+ %e = mul i32 %d, %b ; <i32> [#uses=1]
+ ret i32 %e
}
-int %test6(ubyte %A) {
- %B = mul ubyte %A, 8
- %C = mul ubyte %B, 13
- ret ubyte %C
+define i32 @test11(i32 %a, i32 %b) {
+ %c = icmp sle i32 %a, -1 ; <i1> [#uses=1]
+ %d = zext i1 %c to i32 ; <i32> [#uses=1]
+ ; e = b & (a >> 31)
+ %e = mul i32 %d, %b ; <i32> [#uses=1]
+ ret i32 %e
}
+
+define i32 @test12(i8 %a, i32 %b) {
+ %c = icmp ugt i8 %a, 127 ; <i1> [#uses=1]
+ %d = zext i1 %c to i32 ; <i32> [#uses=1]
+ ; e = b & (a >> 31)
+ %e = mul i32 %d, %b ; <i32> [#uses=1]
+ ret i32 %e
+}
+
+; PR2642
+define internal void @test13(<4 x float>*) {
+ load <4 x float>* %0, align 1
+ mul <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 internal void @test14(<4 x float>*) {
+ load <4 x float>* %0, align 1
+ mul <4 x float> %2, zeroinitializer
+ store <4 x float> %3, <4 x float>* %0, align 1
+ ret void
+}
+