llvm-6502/test/Transforms/DeadArgElim/deadexternal.ll

40 lines
691 B
LLVM

; RUN: opt -deadargelim -S %s | FileCheck %s
define void @test(i32) {
ret void
}
define void @foo() {
call void @test(i32 0)
ret void
; CHECK: @foo
; CHECK: i32 undef
}
define void @f(i32 %X) {
entry:
tail call void @sideeffect() nounwind
ret void
}
declare void @sideeffect()
define void @g(i32 %n) {
entry:
%add = add nsw i32 %n, 1
; CHECK: tail call void @f(i32 undef)
tail call void @f(i32 %add)
ret void
}
define void @h() {
entry:
%i = alloca i32, align 4
volatile store i32 10, i32* %i, align 4
; CHECK: %tmp = volatile load i32* %i, align 4
; CHECK-next: call void @f(i32 undef)
%tmp = volatile load i32* %i, align 4
call void @f(i32 %tmp)
ret void
}