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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
@x = weak global i32 0
define void @self_assign_1() {
; CHECK-LABEL: @self_assign_1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP:%.*]] = load volatile i32, ptr @x, align 4
; CHECK-NEXT: store volatile i32 [[TMP]], ptr @x, align 4
; CHECK-NEXT: br label [[RETURN:%.*]]
; CHECK: return:
; CHECK-NEXT: ret void
;
entry:
%tmp = load volatile i32, ptr @x
store volatile i32 %tmp, ptr @x
br label %return
return:
ret void
}
define void @volatile_store_before_unreachable(i1 %c, ptr %p) {
; CHECK-LABEL: @volatile_store_before_unreachable(
; CHECK-NEXT: br i1 [[C:%.*]], label [[TRUE:%.*]], label [[FALSE:%.*]]
; CHECK: true:
; CHECK-NEXT: store volatile i8 0, ptr [[P:%.*]], align 1
; CHECK-NEXT: unreachable
; CHECK: false:
; CHECK-NEXT: ret void
;
br i1 %c, label %true, label %false
true:
store volatile i8 0, ptr %p
unreachable
false:
ret void
}
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