[X86] Add test for matchAddressRecursively's MUL handling

Noticed in code coverage tests that this isn't tested.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351804 91177308-0d34-0410-b5e6-96231b3b80d8

Author: RKSimon

test/CodeGen/X86/addr-mode-matcher-2.ll

@@ -0,0 +1,73 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=i686-unknown | FileCheck %s --check-prefix=X86
+; RUN: llc < %s -mtriple=x86_64-unknown | FileCheck %s --check-prefix=X64
+
+; Test coverage for matchAddressRecursively's MUL handling
+
+; Based off:
+; struct A {
+;   int m_ints[5];
+;   int m_bar();
+; };
+; struct {
+;   A* m_data;
+; } c;
+; void foo(bool b, int i) {
+;   if (b)
+;     return;
+;   int j = c.m_data[i + 1].m_bar();
+;   foo(false, j);
+; }
+
+%struct.A = type { [5 x i32] }
+
+define void @foo(i1 zeroext, i32) nounwind {
+; X86-LABEL: foo:
+; X86:       # %bb.0:
+; X86-NEXT:    movb {{[0-9]+}}(%esp), %al
+; X86-NEXT:    testb %al, %al
+; X86-NEXT:    je .LBB0_1
+; X86-NEXT:  # %bb.3:
+; X86-NEXT:    retl
+; X86-NEXT:  .LBB0_1: # %.preheader
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    .p2align 4, 0x90
+; X86-NEXT:  .LBB0_2: # =>This Inner Loop Header: Depth=1
+; X86-NEXT:    leal (%eax,%eax,4), %eax
+; X86-NEXT:    leal 20(,%eax,4), %eax
+; X86-NEXT:    pushl %eax
+; X86-NEXT:    calll bar
+; X86-NEXT:    addl $4, %esp
+; X86-NEXT:    jmp .LBB0_2
+;
+; X64-LABEL: foo:
+; X64:       # %bb.0:
+; X64-NEXT:    pushq %rax
+; X64-NEXT:    testl %edi, %edi
+; X64-NEXT:    je .LBB0_1
+; X64-NEXT:  # %bb.3:
+; X64-NEXT:    popq %rax
+; X64-NEXT:    retq
+; X64-NEXT:  .LBB0_1: # %.preheader
+; X64-NEXT:    movl %esi, %eax
+; X64-NEXT:    .p2align 4, 0x90
+; X64-NEXT:  .LBB0_2: # =>This Inner Loop Header: Depth=1
+; X64-NEXT:    incl %eax
+; X64-NEXT:    cltq
+; X64-NEXT:    shlq $2, %rax
+; X64-NEXT:    leaq (%rax,%rax,4), %rdi
+; X64-NEXT:    callq bar
+; X64-NEXT:    jmp .LBB0_2
+  br i1 %0, label %9, label %3
+
+  %4 = phi i32 [ %8, %3 ], [ %1, %2 ]
+  %5 = add nsw i32 %4, 1
+  %6 = sext i32 %5 to i64
+  %7 = getelementptr inbounds %struct.A, %struct.A* null, i64 %6
+  %8 = tail call i32 @bar(%struct.A* %7)
+  br label %3
+
+  ret void
+}
+
+declare i32 @bar(%struct.A*)