[llvm] r321640 - [X86] Codegen test for pr35765

[Sam Parker via llvm-commits]

Author: sam_parker
Date: Tue Jan  2 02:14:00 2018
New Revision: 321640

URL: http://llvm.org/viewvc/llvm-project?rev=321640&view=rev
Log:
[X86] Codegen test for pr35765

Committing reproducer test for pr35765, fix to follow.


Added:
    llvm/trunk/test/CodeGen/X86/pr35765.ll

Added: llvm/trunk/test/CodeGen/X86/pr35765.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/pr35765.ll?rev=321640&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/pr35765.ll (added)
+++ llvm/trunk/test/CodeGen/X86/pr35765.ll Tue Jan  2 02:14:00 2018
@@ -0,0 +1,44 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu %s -o - | FileCheck %s
+
+ at ll = local_unnamed_addr global i64 0, align 8
+ at x = local_unnamed_addr global i64 2651237805702985558, align 8
+ at s1 = local_unnamed_addr global { i8, i8 } { i8 123, i8 5 }, align 2
+ at s2 = local_unnamed_addr global { i8, i8 } { i8 -122, i8 3 }, align 2
+
+define void @PR35765() {
+; CHECK-LABEL: PR35765:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    movzwl {{.*}}(%rip), %ecx
+; CHECK-NEXT:    addl $-1398, %ecx # imm = 0xFA8A
+; CHECK-NEXT:    movl $4, %eax
+; CHECK-NEXT:    # kill: def %cl killed %cl killed %ecx
+; CHECK-NEXT:    shll %cl, %eax
+; CHECK-NEXT:    movzwl {{.*}}(%rip), %ecx
+; CHECK-NEXT:    movzwl {{.*}}(%rip), %edx
+; CHECK-NEXT:    notl %edx
+; CHECK-NEXT:    orl %ecx, %edx
+; CHECK-NEXT:    orl $-2048, %edx # imm = 0xF800
+; CHECK-NEXT:    xorl %eax, %edx
+; CHECK-NEXT:    movslq %edx, %rax
+; CHECK-NEXT:    movq %rax, {{.*}}(%rip)
+; CHECK-NEXT:    retq
+entry:
+  %bf.load.i = load i16, i16* bitcast ({ i8, i8 }* @s1 to i16*), align 2
+  %bf.clear.i = and i16 %bf.load.i, 2047
+  %conv.i = zext i16 %bf.clear.i to i32
+  %sub.i = add nsw i32 %conv.i, -1398
+  %shl.i = shl i32 4, %sub.i
+  %0 = load i64, i64* @x, align 8
+  %bf.load1.i = load i16, i16* bitcast ({ i8, i8 }* @s2 to i16*), align 2
+  %bf.clear2.i = and i16 %bf.load1.i, 2047
+  %1 = xor i16 %bf.clear2.i, -1
+  %neg.i = zext i16 %1 to i64
+  %or.i = or i64 %0, %neg.i
+  %conv5.i = trunc i64 %or.i to i32
+  %conv6.i = and i32 %conv5.i, 65535
+  %xor.i = xor i32 %conv6.i, %shl.i
+  %conv7.i = sext i32 %xor.i to i64
+  store i64 %conv7.i, i64* @ll, align 8
+  ret void
+}