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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=dse -S < %s | FileCheck %s
@global = external constant i8
define void @f() {
; CHECK-LABEL: @f(
; CHECK-NEXT: [[TMP1:%.*]] = call noalias ptr @_Znwm(i64 32)
; CHECK-NEXT: [[TMP2:%.*]] = icmp ugt ptr [[TMP1]], @global
; CHECK-NEXT: call void @llvm.assume(i1 [[TMP2]])
; CHECK-NEXT: store i8 0, ptr [[TMP1]], align 1
; CHECK-NEXT: ret void
;
%tmp1 = call noalias ptr @_Znwm(i64 32)
%tmp2 = icmp ugt ptr %tmp1, @global
call void @llvm.assume(i1 %tmp2)
store i8 0, ptr %tmp1, align 1
ret void
}
define void @f2() {
; CHECK-LABEL: @f2(
; CHECK-NEXT: [[TMP1:%.*]] = call noalias ptr @_Znwm(i64 32)
; CHECK-NEXT: [[TMP2:%.*]] = icmp ugt ptr [[TMP1]], @global
; CHECK-NEXT: call void @llvm.assume(i1 [[TMP2]])
; CHECK-NEXT: store i8 0, ptr [[TMP1]], align 1
; CHECK-NEXT: call void @quux(ptr @global)
; CHECK-NEXT: ret void
;
%tmp1 = call noalias ptr @_Znwm(i64 32)
%tmp2 = icmp ugt ptr %tmp1, @global
call void @llvm.assume(i1 %tmp2)
store i8 0, ptr %tmp1, align 1
call void @quux(ptr @global)
ret void
}
; FIXME: This is a miscompile
define void @pr70547() {
; CHECK-LABEL: @pr70547(
; CHECK-NEXT: [[A:%.*]] = alloca i8, align 1
; CHECK-NEXT: store i8 0, ptr [[A]], align 1
; CHECK-NEXT: [[CALL:%.*]] = call ptr @quux(ptr [[A]]) #[[ATTR1:[0-9]+]]
; CHECK-NEXT: [[V:%.*]] = load i8, ptr [[CALL]], align 1
; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[V]], 1
; CHECK-NEXT: call void @llvm.assume(i1 [[CMP]])
; CHECK-NEXT: ret void
;
%a = alloca i8
store i8 0, ptr %a
%call = call ptr @quux(ptr %a) memory(none) nounwind willreturn
%v = load i8, ptr %call
%cmp = icmp ne i8 %v, 1
call void @llvm.assume(i1 %cmp)
ret void
}
declare ptr @_Znwm(i64)
declare void @llvm.assume(i1)
declare void @quux(ptr)
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