llvm-6502/test/Transforms/MemCpyOpt/crash.ll
Chris Lattner f7f35467a9 fix PR8753, eliminating a case where we'd infinitely make a
substitution because it doesn't actually change the IR.  Patch by
Jakub Staszak!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121361 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-09 07:39:50 +00:00

59 lines
2.7 KiB
LLVM

; RUN: opt < %s -basicaa -memcpyopt -disable-output
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64"
target triple = "armv7-eabi"
%struct.qw = type { [4 x float] }
%struct.bar = type { %struct.qw, %struct.qw, %struct.qw, %struct.qw, %struct.qw, float, float}
; PR4882
define void @test1(%struct.bar* %this) {
entry:
%0 = getelementptr inbounds %struct.bar* %this, i32 0, i32 0, i32 0, i32 0
store float 0.000000e+00, float* %0, align 4
%1 = getelementptr inbounds %struct.bar* %this, i32 0, i32 0, i32 0, i32 1
store float 0.000000e+00, float* %1, align 4
%2 = getelementptr inbounds %struct.bar* %this, i32 0, i32 0, i32 0, i32 2
store float 0.000000e+00, float* %2, align 4
%3 = getelementptr inbounds %struct.bar* %this, i32 0, i32 0, i32 0, i32 3
store float 0.000000e+00, float* %3, align 4
%4 = getelementptr inbounds %struct.bar* %this, i32 0, i32 1, i32 0, i32 0
store float 0.000000e+00, float* %4, align 4
%5 = getelementptr inbounds %struct.bar* %this, i32 0, i32 1, i32 0, i32 1
store float 0.000000e+00, float* %5, align 4
%6 = getelementptr inbounds %struct.bar* %this, i32 0, i32 1, i32 0, i32 2
store float 0.000000e+00, float* %6, align 4
%7 = getelementptr inbounds %struct.bar* %this, i32 0, i32 1, i32 0, i32 3
store float 0.000000e+00, float* %7, align 4
%8 = getelementptr inbounds %struct.bar* %this, i32 0, i32 3, i32 0, i32 1
store float 0.000000e+00, float* %8, align 4
%9 = getelementptr inbounds %struct.bar* %this, i32 0, i32 3, i32 0, i32 2
store float 0.000000e+00, float* %9, align 4
%10 = getelementptr inbounds %struct.bar* %this, i32 0, i32 3, i32 0, i32 3
store float 0.000000e+00, float* %10, align 4
%11 = getelementptr inbounds %struct.bar* %this, i32 0, i32 4, i32 0, i32 0
store float 0.000000e+00, float* %11, align 4
%12 = getelementptr inbounds %struct.bar* %this, i32 0, i32 4, i32 0, i32 1
store float 0.000000e+00, float* %12, align 4
%13 = getelementptr inbounds %struct.bar* %this, i32 0, i32 4, i32 0, i32 2
store float 0.000000e+00, float* %13, align 4
%14 = getelementptr inbounds %struct.bar* %this, i32 0, i32 4, i32 0, i32 3
store float 0.000000e+00, float* %14, align 4
%15 = getelementptr inbounds %struct.bar* %this, i32 0, i32 5
store float 0.000000e+00, float* %15, align 4
unreachable
}
; PR8753
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32,
i1) nounwind
define void @test2(i32 %cmd) nounwind {
call void @llvm.memcpy.p0i8.p0i8.i64(i8* undef, i8* undef, i64 20, i32 1, i1
false) nounwind
call void @llvm.memcpy.p0i8.p0i8.i64(i8* null, i8* undef, i64 20, i32 1, i1
false) nounwind
ret void
}