llvm-project/llvm/test/Transforms/GlobalOpt/assume.ll

22 lines
566 B
LLVM

; RUN: opt -S -globalopt < %s | FileCheck %s
; CHECK: @tmp = local_unnamed_addr global i32 42
@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__I_a, i8* null }]
@tmp = global i32 0
define i32 @TheAnswerToLifeTheUniverseAndEverything() {
ret i32 42
}
define void @_GLOBAL__I_a() {
enter:
%tmp1 = call i32 @TheAnswerToLifeTheUniverseAndEverything()
store i32 %tmp1, i32* @tmp
%cmp = icmp eq i32 %tmp1, 42
call void @llvm.assume(i1 %cmp)
ret void
}
declare void @llvm.assume(i1)