llvm-mirror/test/Transforms/LICM/callbr-crash.ll
Bill Wendling 370e769899 Filter callbr insts from critical edge splitting
Similarly to how splitting predecessors with an indirectbr isn't handled
in the generic way, we also shouldn't split callbrs, for similar
reasons.
2020-02-20 16:24:42 -08:00

19 lines
683 B
LLVM

; RUN: opt -licm -disable-output < %s
define i32 @j() {
entry:
br label %for.cond
for.cond: ; preds = %cond.true.i, %entry
callbr void asm sideeffect "", "X,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@j, %for.end))
to label %cond.true.i [label %for.end]
cond.true.i: ; preds = %for.cond
%asmresult1.i.i = extractvalue { i8, i32 } zeroinitializer, 1
br i1 undef, label %for.end, label %for.cond
for.end: ; preds = %cond.true.i, %for.cond
%asmresult1.i.i2 = phi i32 [ %asmresult1.i.i, %cond.true.i ], [ undef, %for.cond ]
ret i32 undef
}