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; Test if the !invariant.load metadata is maintained by GVN.
; RUN: opt -basicaa -gvn -S < %s | FileCheck %s
define i32 @test1(i32* nocapture %p, i8* nocapture %q) {
; CHECK-LABEL: test1
; CHECK: %x = load i32* %p, align 4, !invariant.load !0
; CHECK-NOT: %y = load
entry:
%x = load i32* %p, align 4, !invariant.load !0
%conv = trunc i32 %x to i8
store i8 %conv, i8* %q, align 1
%y = load i32* %p, align 4, !invariant.load !0
%add = add i32 %y, 1
ret i32 %add
}
define i32 @test2(i32* nocapture %p, i8* nocapture %q) {
; CHECK-LABEL: test2
; CHECK-NOT: !invariant.load
; CHECK-NOT: %y = load
entry:
%x = load i32* %p, align 4
%conv = trunc i32 %x to i8
store i8 %conv, i8* %q, align 1
%y = load i32* %p, align 4, !invariant.load !0
%add = add i32 %y, 1
ret i32 %add
}
!0 = metadata !{ }
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