; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 -verify-machineinstrs | FileCheck %s
;
; Test that foldMemoryOperandImpl() doesn't drop subreg / read-undef flags.
define void @fun_llvm_stress_reduced(ptr, ptr, ptr, i64, i8) {
; CHECK: .text
BB:
%A4 = alloca <4 x i64>
%A1 = alloca <8 x i1>
%E6 = extractelement <4 x i1> undef, i32 3
%L23 = load i8, ptr %0
%B27 = fmul double 0x59A989483BA7E0C6, undef
%L30 = load i16, ptr undef
store i16 -11933, ptr undef
%L46 = load i16, ptr undef
%L61 = load i16, ptr undef
%Sl74 = select i1 undef, i1 undef, i1 true
br label %CF846
CF846: ; preds = %CF877, %BB
%I86 = insertelement <4 x i1> undef, i1 undef, i32 0
%Cmp89 = icmp ne i64 undef, %3
%L90 = load i16, ptr undef
%Shuff92 = shufflevector <4 x i16> zeroinitializer, <4 x i16> zeroinitializer, <4 x i32> <i32 0, i32 2, i32 undef, i32 6>
br label %CF877
CF877: ; preds = %CF846
store i16 %L61, ptr undef
%Cmp110 = icmp eq i16 %L61, undef
br i1 %Cmp110, label %CF846, label %CF862
CF862: ; preds = %CF877
%I114 = insertelement <4 x i64> zeroinitializer, i64 0, i32 0
%B115 = shl <4 x i64> zeroinitializer, %I114
%Sl124 = select i1 true, ptr %A1, ptr %A1
%B130 = frem double %B27, 0x59A989483BA7E0C6
%E143 = extractelement <4 x i64> %B115, i32 1
%Sl148 = select i1 %Cmp89, <1 x i32> undef, <1 x i32> zeroinitializer
br label %CF855
CF855: ; preds = %CF855, %CF862
%Sl171 = select i1 %Sl74, i1 %E6, i1 undef
br i1 %Sl171, label %CF855, label %CF874
CF874: ; preds = %CF855
%L196 = load i16, ptr undef
%B207 = or i8 %4, %L23
%L211 = load <8 x i1>, ptr %Sl124
%B215 = fdiv double 0x8421A9C0D21F6D3E, %B130
%L218 = load i16, ptr %1
%Sl223 = select i1 %Sl171, <4 x i1> %I86, <4 x i1> undef
br label %CF826
CF826: ; preds = %CF866, %CF910, %CF874
%B245 = ashr i16 -11933, %L46
br label %CF910
CF910: ; preds = %CF826
%L257 = load i8, ptr %0
%BC262 = bitcast i64 %E143 to double
store i16 %L196, ptr %1
%E266 = extractelement <4 x i16> %Shuff92, i32 0
%Sl271 = select i1 %Cmp89, i1 %Cmp89, i1 %Cmp110
br i1 %Sl271, label %CF826, label %CF866
CF866: ; preds = %CF910
store i64 %E143, ptr %2
%I276 = insertelement <4 x double> undef, double %BC262, i32 3
%L281 = load <8 x i1>, ptr %Sl124
%E282 = extractelement <4 x i1> zeroinitializer, i32 2
br i1 %E282, label %CF826, label %CF848
CF848: ; preds = %CF866
%Cmp288 = fcmp olt <4 x double> undef, %I276
%FC294 = fptosi double undef to i16
%Cmp296 = icmp ule i16 %FC294, %B245
store i16 %L218, ptr undef
store i8 %L23, ptr %0
%E320 = extractelement <4 x i1> %Sl223, i32 1
%Cmp345 = icmp uge <1 x i32> undef, %Sl148
store i16 %L196, ptr %1
br label %CF893
CF893: ; preds = %CF893, %CF848
%Cmp361 = fcmp uge float undef, undef
br i1 %Cmp361, label %CF893, label %CF906
CF906: ; preds = %CF893
store i16 -11933, ptr undef
%Shuff379 = shufflevector <1 x i1> undef, <1 x i1> %Cmp345, <1 x i32> <i32 1>
br label %CF850
CF850: ; preds = %CF850, %CF906
br i1 undef, label %CF850, label %CF925
CF925: ; preds = %CF850
store i16 %E266, ptr %1
%Cmp413 = icmp ugt i8 %L257, undef
store i16 %L30, ptr %1
%Sl420 = select i1 %Sl171, <8 x i1> undef, <8 x i1> %L281
store i16 %L90, ptr undef
%FC469 = uitofp i1 %Cmp296 to float
store i1 %Cmp413, ptr %Sl124
br label %CF833
CF833: ; preds = %CF833, %CF925
store i8 %B207, ptr %0
%E509 = extractelement <8 x i1> %L211, i32 7
br i1 %E509, label %CF833, label %CF882
CF882: ; preds = %CF833
store i1 %Sl271, ptr %Sl124
br label %CF852
CF852: ; preds = %CF896, %CF882
store i1 %Sl74, ptr %Sl124
br label %CF896
CF896: ; preds = %CF852
%E576 = extractelement <4 x i1> %Cmp288, i32 3
br i1 %E576, label %CF852, label %CF890
CF890: ; preds = %CF896
%Sl581 = select i1 undef, float undef, float %FC469
unreachable
}
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