llvm-6502/test/Transforms/DeadStoreElimination/context-sensitive.ll

16 lines
502 B
LLVM

; RUN: opt < %s -dse -S | not grep DEAD
target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
declare void @ext()
define i32* @caller() {
%P = malloc i32 ; <i32*> [#uses=4]
%DEAD = load i32* %P ; <i32> [#uses=1]
%DEAD2 = add i32 %DEAD, 1 ; <i32> [#uses=1]
store i32 %DEAD2, i32* %P
call void @ext( )
store i32 0, i32* %P
ret i32* %P
}