; RUN: opt -passes=licm -verify-memoryssa -S %s | FileCheck %s
; REQUIRES: asserts
target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-a:8:16-n32:64"
target triple = "s390x-ibm-linux"
@g_77 = external dso_local global i16, align 2
; CHECK-LABEL: @f1()
define void @f1() {
entry:
store i16 undef, ptr @g_77, align 2
br label %loop_pre
unreachablelabel: ; No predecessors
br label %loop_pre
loop_pre:
br label %for.cond.header
for.cond.header:
store i32 0, ptr undef, align 4
br i1 undef, label %for.body, label %for.end
for.body:
%tmp1 = load volatile i16, ptr undef, align 2
br label %for.end
for.end:
br i1 undef, label %func.exit, label %for.cond.header
func.exit:
ret void
}
@g_159 = external dso_local global i32, align 4
; CHECK-LABEL: @f2()
define void @f2() {
entry:
br label %for.header.first
for.header.first:
br label %for.body.first
for.body.first:
store i32 0, ptr @g_159, align 4
br i1 undef, label %for.body.first, label %for.end.first
for.end.first:
br i1 undef, label %lor.end, label %for.header.first
lor.end:
br label %for.pre
unreachablelabel: ; No predecessors
br label %for.pre
for.pre:
br label %for.header.second
for.header.second:
store i32 undef, ptr undef, align 4
br label %for.header.second
}
@g_271 = external dso_local global i8, align 2
@g_427 = external dso_local unnamed_addr global [9 x i16], align 2
; CHECK-LABEL: @f3()
define void @f3() {
entry:
br label %for.preheader
for.preheader:
store volatile i8 undef, ptr @g_271, align 2
br i1 undef, label %for.preheader, label %for.end
for.end:
br label %lbl_1058.i
unreachablelabel: ; No predecessors
br label %lbl_1058.i
lbl_1058.i:
br label %for.cond3.preheader.i
for.cond3.preheader.i:
%tmp1 = load i16, ptr getelementptr inbounds ([9 x i16], ptr @g_427, i64 0, i64 2), align 2
%conv620.i129 = zext i16 %tmp1 to i32
%cmp621.i130 = icmp ugt i32 undef, %conv620.i129
%conv622.i131 = zext i1 %cmp621.i130 to i32
store i32 %conv622.i131, ptr undef, align 4
br i1 undef, label %func.exit, label %for.cond3.preheader.i
func.exit:
ret void
}
@g_6 = external dso_local unnamed_addr global [3 x i32], align 4
@g_244 = external dso_local global i64, align 8
@g_1164 = external dso_local global i64, align 8
; CHECK-LABEL: @f4()
define void @f4() {
entry:
br label %for.cond8.preheader
for.cond8.preheader:
store i32 0, ptr getelementptr inbounds ([3 x i32], ptr @g_6, i64 0, i64 2), align 4
br i1 undef, label %if.end, label %for.cond8.preheader
if.end:
br i1 undef, label %cleanup1270, label %for.cond504.preheader
for.cond504.preheader:
store i64 undef, ptr @g_244, align 8
br label %cleanup1270
for.cond559.preheader:
store i64 undef, ptr @g_1164, align 8
br i1 undef, label %for.cond559.preheader, label %cleanup1270
cleanup1270:
ret void
}
@g_1504 = external dso_local local_unnamed_addr global ptr, align 8
define void @f5() {
bb:
tail call fastcc void @f21()
br label %bb12.outer
bb12.outer.loopexit: ; No predecessors!
br label %bb12.outer
bb12.outer: ; preds = %bb12.outer.loopexit, %bb
br i1 undef, label %bb12.outer.split.us, label %bb12.preheader
bb12.preheader: ; preds = %bb12.outer
br label %bb12
bb12.outer.split.us: ; preds = %bb12.outer
br label %bb16.us.us
bb16.us.us: ; preds = %bb16.us.us, %bb12.outer.split.us
br label %bb16.us.us
bb12: ; preds = %bb77.1, %bb12.preheader
br i1 undef, label %bb25.preheader, label %bb77
bb25.preheader: ; preds = %bb12.1, %bb12
br label %bb25
bb25: ; preds = %l0, %bb25.preheader
br i1 undef, label %bb62, label %bb71.thread
bb62: ; preds = %bb25
br i1 undef, label %bb92.loopexit, label %l0
l0: ; preds = %bb62
br label %bb25
bb71.thread: ; preds = %bb25
br label %bb92
bb77: ; preds = %bb12
%tmp78 = load ptr, ptr @g_1504, align 8
%tmp79 = load volatile ptr, ptr %tmp78, align 8
br i1 undef, label %bb91, label %bb12.1
bb91: ; preds = %bb77.1, %bb77
unreachable
bb92.loopexit: ; preds = %bb62
br label %bb92
bb92: ; preds = %bb92.loopexit, %bb71.thread
ret void
bb12.1: ; preds = %bb77
br i1 undef, label %bb25.preheader, label %bb77.1
bb77.1: ; preds = %bb12.1
br i1 undef, label %bb91, label %bb12
}
declare void @f21()
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