;RUN: opt -passes=gvn -S < %s | FileCheck %s
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n8:16:32-S64"
target triple = "thumbv7--linux-gnueabi"
%struct.a = type { i16, i16, [1 x %union.a] }
%union.a = type { i32 }
@length = external global [0 x i32], align 4
; Function Attrs: nounwind
define fastcc void @foo(ptr nocapture readonly %x) {
;CHECK-LABEL: foo
entry:
br label %bb0
bb0: ; preds = %land.lhs.true, %entry
;CHECK: bb0:
%x.tr = phi ptr [ %x, %entry ], [ null, %land.lhs.true ]
%0 = load i16, ptr %x.tr, align 4
; CHECK: load i16, ptr
%conv = zext i16 %0 to i32
switch i32 %conv, label %if.end.50 [
i32 43, label %cleanup
i32 52, label %if.then.5
]
if.then.5: ; preds = %bb0
br i1 undef, label %land.lhs.true, label %if.then.26
land.lhs.true: ; preds = %if.then.5
br i1 undef, label %cleanup, label %bb0
if.then.26: ; preds = %if.then.5
%x.tr.lcssa163 = phi ptr [ %x.tr, %if.then.5 ]
br i1 undef, label %cond.end, label %cond.false
cond.false: ; preds = %if.then.26
; CHECK: cond.false:
; CHECK: load i16
%mode = getelementptr inbounds %struct.a, ptr %x.tr.lcssa163, i32 0, i32 1
%bf.load = load i16, ptr %mode, align 2
%bf.shl = shl i16 %bf.load, 8
br label %cond.end
cond.end: ; preds = %cond.false, %if.then.26
br i1 undef, label %if.then.44, label %cleanup
if.then.44: ; preds = %cond.end
unreachable
if.end.50: ; preds = %bb0
;%CHECK: if.end.50:
%conv.lcssa = phi i32 [ %conv, %bb0 ]
%arrayidx52 = getelementptr inbounds [0 x i32], ptr @length, i32 0, i32 %conv.lcssa
%1 = load i32, ptr %arrayidx52, align 4
br i1 undef, label %for.body.57, label %cleanup
for.body.57: ; preds = %if.end.50
%i.2157 = add nsw i32 %1, -1
unreachable
cleanup: ; preds = %if.end.50, %cond.end, %land.lhs.true, %bb0
ret void
}
@yy_c_buf_p = external unnamed_addr global ptr, align 4
@dfg_text = external global ptr, align 4
define void @dfg_lex() {
;CHECK-LABEL: dfg_lex
entry:
br label %while.bodythread-pre-split
while.bodythread-pre-split: ; preds = %while.end, %while.end, %entry
br i1 undef, label %if.then.14, label %if.end.15
if.then.14: ; preds = %while.end, %while.bodythread-pre-split
%v1 = load i32, ptr @dfg_text, align 4
%sub.ptr.sub = sub i32 undef, %v1
br label %if.end.15
if.end.15: ; preds = %if.then.14, %while.bodythread-pre-split
%v2 = load ptr, ptr @yy_c_buf_p, align 4
br label %while.cond.16
while.cond.16: ; preds = %while.cond.16, %if.end.15
br i1 undef, label %while.cond.16, label %while.end
while.end: ; preds = %while.cond.16
%add.ptr = getelementptr inbounds i8, ptr %v2, i32 undef
store ptr %add.ptr, ptr @dfg_text, align 4
%sub.ptr.rhs.cast25 = ptrtoint ptr %add.ptr to i32
%sub.ptr.sub26 = sub i32 0, %sub.ptr.rhs.cast25
switch i32 undef, label %sw.default [
i32 65, label %while.bodythread-pre-split
i32 3, label %return
i32 57, label %while.bodythread-pre-split
i32 60, label %if.then.14
]
sw.default: ; preds = %while.end
unreachable
return: ; preds = %while.end
ret void
}
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