llvm-for-llvmta/test/Transforms/JumpThreading/select-unfold-msan.ll

29 lines
645 B
LLVM

; PR45220
; RUN: opt -S -jump-threading < %s | FileCheck %s
declare i1 @NOP()
define dso_local i32 @f(i1 %b, i1 %u) sanitize_memory {
entry:
br i1 %b, label %if.end, label %if.else
if.else:
%call = call i1 @NOP()
br label %if.end
if.end:
; Check that both selects in this BB are still in place,
; and were not replaced with a conditional branch.
; CHECK: phi
; CHECK-NEXT: phi
; CHECK-NEXT: select
; CHECK-NEXT: select
; CHECK-NEXT: ret
%u1 = phi i1 [ true, %if.else ], [ %u, %entry ]
%v = phi i1 [ %call, %if.else ], [ false, %entry ]
%s = select i1 %u1, i32 22, i32 0
%v1 = select i1 %v, i32 %s, i32 42
ret i32 %v1
}