storepointer-compare-no-null-opt.ll
998 Bytes
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; RUN: opt < %s -globalopt -S | FileCheck %s
; CHECK: global
@G = internal global void ()* null ; <void ()**> [#uses=2]
define internal void @Actual() {
; CHECK-LABEL: Actual(
ret void
}
define void @init() {
; CHECK-LABEL: init(
; CHECK: store void ()* @Actual, void ()** @G
store void ()* @Actual, void ()** @G
ret void
}
define void @doit() #0 {
; CHECK-LABEL: doit(
%FP = load void ()*, void ()** @G ; <void ()*> [#uses=2]
; CHECK: %FP = load void ()*, void ()** @G
%CC = icmp eq void ()* %FP, null ; <i1> [#uses=1]
; CHECK: %CC = icmp eq void ()* %FP, null
br i1 %CC, label %isNull, label %DoCall
; CHECK: br i1 %CC, label %isNull, label %DoCall
DoCall: ; preds = %0
; CHECK: DoCall:
; CHECK: call void %FP()
; CHECK: ret void
call void %FP( )
ret void
isNull: ; preds = %0
; CHECK: isNull:
; CHECK: ret void
ret void
}
attributes #0 = { null_pointer_is_valid }