[llvm] r283894 - [x86] add tests to show missed folds for masked bools

[Sanjay Patel via llvm-commits]

Author: spatel
Date: Tue Oct 11 11:04:37 2016
New Revision: 283894

URL: http://llvm.org/viewvc/llvm-project?rev=283894&view=rev
Log:
[x86] add tests to show missed folds for masked bools

Added:
    llvm/trunk/test/CodeGen/X86/mask-negated-bool.ll

Added: llvm/trunk/test/CodeGen/X86/mask-negated-bool.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/mask-negated-bool.ll?rev=283894&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/mask-negated-bool.ll (added)
+++ llvm/trunk/test/CodeGen/X86/mask-negated-bool.ll Tue Oct 11 11:04:37 2016
@@ -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
+}
+