mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-22 23:31:32 +00:00
22 lines
511 B
LLVM
22 lines
511 B
LLVM
|
; Mem2reg should not insert dead PHI nodes! The naive algorithm inserts a PHI
|
||
|
|
; node in L3, even though there is no load of %A in anything dominated by L3.
|
||
|
|
|
||
|
|
; RUN: llvm-as < %s | opt -mem2reg | llvm-dis | not grep phi
|
||
|
|
|
||
|
|
void %test(int %B, bool %C) {
|
||
|
|
%A = alloca int
|
||
|
|
store int %B, int* %A
|
||
|
|
br bool %C, label %L1, label %L2
|
||
|
|
L1:
|
||
|
|
store int %B, int* %A
|
||
|
|
%D = load int* %A
|
||
|
|
call void %test(int %D, bool false)
|
||
|
|
br label %L3
|
||
|
|
L2:
|
||
|
|
%E = load int* %A
|
||
|
|
call void %test(int %E, bool true)
|
||
|
|
br label %L3
|
||
|
|
L3:
|
||
|
|
ret void
|
||
|
|
}
|