[llvm] r309375 - [X86] Add test case for PR33290

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Fri Jul 28 02:43:52 2017
New Revision: 309375

URL: http://llvm.org/viewvc/llvm-project?rev=309375&view=rev
Log:
[X86] Add test case for PR33290

Added:
    llvm/trunk/test/CodeGen/X86/pr33290.ll

Added: llvm/trunk/test/CodeGen/X86/pr33290.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/pr33290.ll?rev=309375&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/pr33290.ll (added)
+++ llvm/trunk/test/CodeGen/X86/pr33290.ll Fri Jul 28 02:43:52 2017
@@ -0,0 +1,51 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=i686-unknown-unknown | FileCheck %s --check-prefix=X86
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=X64
+
+ at a = common global i32 0, align 4
+ at c = common local_unnamed_addr global i8 0, align 1
+ at b = common local_unnamed_addr global i32* null, align 8
+
+define void @e() {
+; X86-LABEL: e:
+; X86:       # BB#0: # %entry
+; X86-NEXT:    movl b, %eax
+; X86-NEXT:    .p2align 4, 0x90
+; X86-NEXT:  .LBB0_1: # %for.cond
+; X86-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NEXT:    movzbl c, %ecx
+; X86-NEXT:    leal a+2(%ecx), %ecx
+; X86-NEXT:    movb $0, c
+; X86-NEXT:    movl %ecx, (%eax)
+; X86-NEXT:    jmp .LBB0_1
+;
+; X64-LABEL: e:
+; X64:       # BB#0: # %entry
+; X64-NEXT:    movq {{.*}}(%rip), %rax
+; X64-NEXT:    movl $a, %esi
+; X64-NEXT:    .p2align 4, 0x90
+; X64-NEXT:  .LBB0_1: # %for.cond
+; X64-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NEXT:    movzbl {{.*}}(%rip), %edx
+; X64-NEXT:    addq %rsi, %rdx
+; X64-NEXT:    setb %cl
+; X64-NEXT:    addq $2, %rdx
+; X64-NEXT:    adcb $0, %cl
+; X64-NEXT:    movb %cl, {{.*}}(%rip)
+; X64-NEXT:    movl %edx, (%rax)
+; X64-NEXT:    jmp .LBB0_1
+entry:
+  %0 = load i32*, i32** @b, align 8
+  br label %for.cond
+
+for.cond:
+  %1 = load i8, i8* @c, align 1
+  %conv = zext i8 %1 to i128
+  %add = add nuw nsw i128 %conv, add (i128 ptrtoint (i32* @a to i128), i128 2)
+  %2 = lshr i128 %add, 64
+  %conv1 = trunc i128 %2 to i8
+  store i8 %conv1, i8* @c, align 1
+  %conv2 = trunc i128 %add to i32
+  store i32 %conv2, i32* %0, align 4
+  br label %for.cond
+}