952e069393
This is UB and allows the compiler to give any result, so these tests weren't meaningful InstCombine tests are now clean of 'br undef'
25 lines
821 B
LLVM
25 lines
821 B
LLVM
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
|
|
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-pc-windows-msvc"
|
|
|
|
%class.A = type { i32 (...)** }
|
|
|
|
@0 = constant [1 x i8*] zeroinitializer
|
|
|
|
@vtbl = alias i8*, getelementptr inbounds ([1 x i8*], [1 x i8*]* @0, i32 0, i32 0)
|
|
|
|
define i32 (%class.A*)* @test(i1 %c1, i1 %c2) {
|
|
; CHECK-LABEL: test
|
|
entry:
|
|
br i1 %c1, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %for.body, %entry
|
|
br i1 %c2, label %for.body, label %for.end
|
|
|
|
for.end: ; preds = %for.body, %entry
|
|
%A = phi i32 (%class.A*)** [ bitcast (i8** @vtbl to i32 (%class.A*)**), %for.body ], [ null, %entry ]
|
|
%B = load i32 (%class.A*)*, i32 (%class.A*)** %A
|
|
ret i32 (%class.A*)* %B
|
|
}
|