[x86] add tests to show missed folds for masked bools

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283894 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/mask-negated-bool.ll b/test/CodeGen/X86/mask-negated-bool.ll
new file mode 100644 (file)
index 0000000..2e6e200
--- /dev/null
+++ b/test/CodeGen/X86/mask-negated-bool.ll
@@ -0,0 +1,48 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
+
+define i32 @mask_negated_extended_bool1(i1 %x) {
+; CHECK-LABEL: mask_negated_extended_bool1:
+; CHECK:       # BB#0:
+; CHECK-NEXT:    negl %edi
+; CHECK-NEXT:    andl $1, %edi
+; CHECK-NEXT:    movl %edi, %eax
+; CHECK-NEXT:    retq
+;
+  %ext = zext i1 %x to i32
+  %neg = sub i32 0, %ext
+  %and = and i32 %neg, 1
+  ret i32 %and
+}
+
+define i32 @mask_negated_extended_bool2(i1 zeroext %x) {
+; CHECK-LABEL: mask_negated_extended_bool2:
+; CHECK:       # BB#0:
+; CHECK-NEXT:    movzbl %dil, %eax
+; CHECK-NEXT:    negl %eax
+; CHECK-NEXT:    andl $1, %eax
+; CHECK-NEXT:    retq
+;
+  %ext = zext i1 %x to i32
+  %neg = sub i32 0, %ext
+  %and = and i32 %neg, 1
+  ret i32 %and
+}
+
+define <4 x i32> @mask_negated_extended_bool_vec(<4 x i1> %x) {
+; CHECK-LABEL: mask_negated_extended_bool_vec:
+; CHECK:       # BB#0:
+; CHECK-NEXT:    movdqa {{.*#+}} xmm2 = [1,1,1,1]
+; CHECK-NEXT:    pand %xmm2, %xmm0
+; CHECK-NEXT:    pxor %xmm1, %xmm1
+; CHECK-NEXT:    psubd %xmm0, %xmm1
+; CHECK-NEXT:    pand %xmm2, %xmm1
+; CHECK-NEXT:    movdqa %xmm1, %xmm0
+; CHECK-NEXT:    retq
+;
+  %ext = zext <4 x i1> %x to <4 x i32>
+  %neg = sub <4 x i32> zeroinitializer, %ext
+  %and = and <4 x i32> %neg, <i32 1, i32 1, i32 1, i32 1>
+  ret <4 x i32> %and
+}
+