[llvm] d34d2ec - [X86][SSE] Add original PR38522 test case

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2020-03-28T10:56:57Z
New Revision: d34d2ec28be1e80adb4e033f44b88acb289817cd

URL: https://github.com/llvm/llvm-project/commit/d34d2ec28be1e80adb4e033f44b88acb289817cd
DIFF: https://github.com/llvm/llvm-project/commit/d34d2ec28be1e80adb4e033f44b88acb289817cd.diff

LOG: [X86][SSE] Add original PR38522 test case

Added: 
    

Modified: 
    llvm/test/CodeGen/X86/combine-ptest.ll

Removed: 
    


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diff  --git a/llvm/test/CodeGen/X86/combine-ptest.ll b/llvm/test/CodeGen/X86/combine-ptest.ll
index 30950448007f..d27e179da689 100644
--- a/llvm/test/CodeGen/X86/combine-ptest.ll
+++ b/llvm/test/CodeGen/X86/combine-ptest.ll
@@ -103,6 +103,27 @@ define i32 @ptestnzc_256_invert(<4 x i64> %c, i32 %a, i32 %b) {
   ret i32 %t4
 }
 
+define zeroext i1 @PR38522(<16 x i8>* %x, <16 x i8>* %y) {
+; CHECK-LABEL: PR38522:
+; CHECK:       # %bb.0: # %start
+; CHECK-NEXT:    vmovdqa (%rdi), %xmm0
+; CHECK-NEXT:    vpcmpgtb (%rsi), %xmm0, %xmm0
+; CHECK-NEXT:    vpcmpeqd %xmm1, %xmm1, %xmm1
+; CHECK-NEXT:    vpxor %xmm1, %xmm0, %xmm0
+; CHECK-NEXT:    vptest %xmm1, %xmm0
+; CHECK-NEXT:    setb %al
+; CHECK-NEXT:    retq
+start:
+  %0 = load <16 x i8>, <16 x i8>* %x, align 16
+  %1 = load <16 x i8>, <16 x i8>* %y, align 16
+  %2 = icmp sle <16 x i8> %0, %1
+  %3 = sext <16 x i1> %2 to <16 x i8>
+  %4 = bitcast <16 x i8> %3 to <2 x i64>
+  %5 = tail call i32 @llvm.x86.sse41.ptestc(<2 x i64> %4, <2 x i64> <i64 -1, i64 -1>)
+  %6 = icmp eq i32 %5, 1
+  ret i1 %6
+}
+
 declare i32 @llvm.x86.sse41.ptestz(<2 x i64>, <2 x i64>) nounwind readnone
 declare i32 @llvm.x86.sse41.ptestc(<2 x i64>, <2 x i64>) nounwind readnone
 declare i32 @llvm.x86.sse41.ptestnzc(<2 x i64>, <2 x i64>) nounwind readnone