Index: test/CodeGen/X86/pr34629.ll
===================================================================
--- /dev/null
+++ test/CodeGen/X86/pr34629.ll
@@ -0,0 +1,52 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+@b = common local_unnamed_addr global i64 0, align 8
+@a = common local_unnamed_addr global i8 0, align 1
+
+; Function Attrs: norecurse nounwind uwtable
+define void @c() local_unnamed_addr #0 {
+; CHECK-LABEL: c:
+; CHECK:       # BB#0: # %entry
+; CHECK-NEXT:    movq {{.*}}(%rip), %rax
+; CHECK-NEXT:    leaq (%rax,%rax,4), %rcx
+; CHECK-NEXT:    negq %rcx
+; CHECK-NEXT:    leaq (%rax,%rax,8), %rax
+; CHECK-NEXT:    leaq (%rax,%rax,4), %rax
+; CHECK-NEXT:    testq %rax, %rcx
+; CHECK-NEXT:    je .LBB0_2
+; CHECK-NEXT:  # BB#1: # %if.then
+; CHECK-NEXT:    movb $0, {{.*}}(%rip)
+; CHECK-NEXT:  .LBB0_2: # %if.end
+; CHECK-NEXT:    retq
+entry:
+  %0 = load i64, i64* @b, align 8, !tbaa !2
+  %mul = mul nsw i64 %0, -5
+  %mul1 = mul nsw i64 %0, 45
+  %and = and i64 %mul, %mul1
+  %tobool = icmp eq i64 %and, 0
+  br i1 %tobool, label %if.end, label %if.then
+
+if.then:                                          ; preds = %entry
+  store i8 0, i8* @a, align 1, !tbaa !6
+  br label %if.end
+
+if.end:                                           ; preds = %entry, %if.then
+  ret void
+}
+
+attributes #0 = { norecurse nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{!"clang version 6.0.0 "}
+!2 = !{!3, !3, i64 0}
+!3 = !{!"long", !4, i64 0}
+!4 = !{!"omnipotent char", !5, i64 0}
+!5 = !{!"Simple C/C++ TBAA"}
+!6 = !{!4, !4, i64 0}
Index: test/CodeGen/X86/pr34634.ll
===================================================================
--- /dev/null
+++ test/CodeGen/X86/pr34634.ll
@@ -0,0 +1,67 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+@a = common local_unnamed_addr global [1 x [10 x i32]] zeroinitializer, align 16
+@c = common local_unnamed_addr global i32 0, align 4
+@b = common local_unnamed_addr global [1 x [7 x i32]] zeroinitializer, align 16
+
+; Function Attrs: norecurse nounwind uwtable
+define void @fn1() local_unnamed_addr #0 {
+; CHECK-LABEL: fn1:
+; CHECK:       # BB#0: # %entry
+; CHECK-NEXT:    movslq {{.*}}(%rip), %rax
+; CHECK-NEXT:    leaq (%rax,%rax,4), %rcx
+; CHECK-NEXT:    leaq (,%rax,4), %rdx
+; CHECK-NEXT:    movl a(%rdx,%rcx,8), %ecx
+; CHECK-NEXT:    leaq (%rax,%rax,8), %rdx
+; CHECK-NEXT:    leaq (%rdx,%rdx,2), %rdx
+; CHECK-NEXT:    addq %rax, %rdx
+; CHECK-NEXT:    movl %ecx, b(%rdx,%rax,4)
+; CHECK-NEXT:    retq
+entry:
+  %0 = load i32, i32* @c, align 4, !tbaa !2
+  %idxprom = sext i32 %0 to i64
+  %arrayidx2 = getelementptr inbounds [1 x [10 x i32]], [1 x [10 x i32]]* @a, i64 0, i64 %idxprom, i64 %idxprom
+  %1 = load i32, i32* %arrayidx2, align 4, !tbaa !2
+  %arrayidx6 = getelementptr inbounds [1 x [7 x i32]], [1 x [7 x i32]]* @b, i64 0, i64 %idxprom, i64 %idxprom
+  store i32 %1, i32* %arrayidx6, align 4, !tbaa !2
+  ret void
+}
+
+; Function Attrs: norecurse nounwind uwtable
+define i32 @main() local_unnamed_addr #0 {
+; CHECK-LABEL: main:
+; CHECK:       # BB#0: # %entry
+; CHECK-NEXT:    movslq {{.*}}(%rip), %rax
+; CHECK-NEXT:    leaq (%rax,%rax,4), %rcx
+; CHECK-NEXT:    leaq (,%rax,4), %rdx
+; CHECK-NEXT:    movl a(%rdx,%rcx,8), %ecx
+; CHECK-NEXT:    leaq (%rax,%rax,8), %rdx
+; CHECK-NEXT:    leaq (%rdx,%rdx,2), %rdx
+; CHECK-NEXT:    addq %rax, %rdx
+; CHECK-NEXT:    movl %ecx, b(%rdx,%rax,4)
+; CHECK-NEXT:    xorl %eax, %eax
+; CHECK-NEXT:    retq
+entry:
+  %0 = load i32, i32* @c, align 4, !tbaa !2
+  %idxprom.i = sext i32 %0 to i64
+  %arrayidx2.i = getelementptr inbounds [1 x [10 x i32]], [1 x [10 x i32]]* @a, i64 0, i64 %idxprom.i, i64 %idxprom.i
+  %1 = load i32, i32* %arrayidx2.i, align 4, !tbaa !2
+  %arrayidx6.i = getelementptr inbounds [1 x [7 x i32]], [1 x [7 x i32]]* @b, i64 0, i64 %idxprom.i, i64 %idxprom.i
+  store i32 %1, i32* %arrayidx6.i, align 4, !tbaa !2
+  ret i32 0
+}
+
+attributes #0 = { norecurse nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{!"clang version 6.0.0 "}
+!2 = !{!3, !3, i64 0}
+!3 = !{!"int", !4, i64 0}
+!4 = !{!"omnipotent char", !5, i64 0}
+!5 = !{!"Simple C/C++ TBAA"}