[InstSimplify][InstCombine] don't crash when folding vector selects of icmp
Differential Revision: https://reviews.llvm.org/D22602
llvm-svn: 276209
diff --git a/llvm/test/Transforms/InstCombine/select.ll b/llvm/test/Transforms/InstCombine/select.ll
index 079e5fb..4b9f690 100644
--- a/llvm/test/Transforms/InstCombine/select.ll
+++ b/llvm/test/Transforms/InstCombine/select.ll
@@ -1742,3 +1742,26 @@
%s1 = select i1 %c1, i32 %s0, i32 -1
ret i32 %s1
}
+
+define i32 @select_icmp_slt0_xor(i32 %x) {
+; CHECK-LABEL: @select_icmp_slt0_xor(
+; CHECK-NEXT: [[TMP1:%.*]] = or i32 %x, -2147483648
+; CHECK-NEXT: ret i32 [[TMP1]]
+;
+ %cmp = icmp slt i32 %x, zeroinitializer
+ %xor = xor i32 %x, 2147483648
+ %x.xor = select i1 %cmp, i32 %x, i32 %xor
+ ret i32 %x.xor
+}
+
+define <2 x i32> @select_icmp_slt0_xor_vec(<2 x i32> %x) {
+; CHECK-LABEL: @select_icmp_slt0_xor_vec(
+; CHECK-NEXT: [[TMP1:%.*]] = or <2 x i32> %x, <i32 -2147483648, i32 -2147483648>
+; CHECK-NEXT: ret <2 x i32> [[TMP1]]
+;
+ %cmp = icmp slt <2 x i32> %x, zeroinitializer
+ %xor = xor <2 x i32> %x, <i32 2147483648, i32 2147483648>
+ %x.xor = select <2 x i1> %cmp, <2 x i32> %x, <2 x i32> %xor
+ ret <2 x i32> %x.xor
+}
+
diff --git a/llvm/test/Transforms/InstSimplify/select.ll b/llvm/test/Transforms/InstSimplify/select.ll
index adc9392..4500662 100644
--- a/llvm/test/Transforms/InstSimplify/select.ll
+++ b/llvm/test/Transforms/InstSimplify/select.ll
@@ -119,6 +119,17 @@
ret i32 %cond
}
+define <2 x i8> @test11vec(<2 x i8> %X) {
+; CHECK-LABEL: @test11vec(
+; CHECK-NEXT: [[AND:%.*]] = and <2 x i8> %X, <i8 127, i8 127>
+; CHECK-NEXT: ret <2 x i8> [[AND]]
+;
+ %cmp = icmp sgt <2 x i8> %X, <i8 -1, i8 -1>
+ %and = and <2 x i8> %X, <i8 127, i8 127>
+ %sel = select <2 x i1> %cmp, <2 x i8> %X, <2 x i8> %and
+ ret <2 x i8> %sel
+}
+
define i32 @select_icmp_and_8_eq_0_or_8(i32 %x) {
; CHECK-LABEL: @select_icmp_and_8_eq_0_or_8(
; CHECK-NEXT: [[OR:%.*]] = or i32 %x, 8