109 lines
3.7 KiB
LLVM
109 lines
3.7 KiB
LLVM
;RUN: opt -gvn -S < %s | FileCheck %s
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n8:16:32-S64"
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target triple = "thumbv7--linux-gnueabi"
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%struct.a = type { i16, i16, [1 x %union.a] }
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%union.a = type { i32 }
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@length = external global [0 x i32], align 4
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; Function Attrs: nounwind
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define fastcc void @foo(%struct.a* nocapture readonly %x) {
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;CHECK-LABEL: foo
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entry:
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br label %bb0
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bb0: ; preds = %land.lhs.true, %entry
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;CHECK: bb0:
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%x.tr = phi %struct.a* [ %x, %entry ], [ null, %land.lhs.true ]
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%code1 = getelementptr inbounds %struct.a, %struct.a* %x.tr, i32 0, i32 0
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%0 = load i16, i16* %code1, align 4
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; CHECK: load i32, i32*
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%conv = zext i16 %0 to i32
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switch i32 %conv, label %if.end.50 [
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i32 43, label %cleanup
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i32 52, label %if.then.5
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]
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if.then.5: ; preds = %bb0
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br i1 undef, label %land.lhs.true, label %if.then.26
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land.lhs.true: ; preds = %if.then.5
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br i1 undef, label %cleanup, label %bb0
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if.then.26: ; preds = %if.then.5
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%x.tr.lcssa163 = phi %struct.a* [ %x.tr, %if.then.5 ]
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br i1 undef, label %cond.end, label %cond.false
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cond.false: ; preds = %if.then.26
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; CHECK: cond.false:
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; CHECK-NOT: load
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%mode = getelementptr inbounds %struct.a, %struct.a* %x.tr.lcssa163, i32 0, i32 1
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%bf.load = load i16, i16* %mode, align 2
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%bf.shl = shl i16 %bf.load, 8
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br label %cond.end
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cond.end: ; preds = %cond.false, %if.then.26
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br i1 undef, label %if.then.44, label %cleanup
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if.then.44: ; preds = %cond.end
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unreachable
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if.end.50: ; preds = %bb0
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;%CHECK: if.end.50:
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%conv.lcssa = phi i32 [ %conv, %bb0 ]
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%arrayidx52 = getelementptr inbounds [0 x i32], [0 x i32]* @length, i32 0, i32 %conv.lcssa
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%1 = load i32, i32* %arrayidx52, align 4
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br i1 undef, label %for.body.57, label %cleanup
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for.body.57: ; preds = %if.end.50
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%i.2157 = add nsw i32 %1, -1
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unreachable
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cleanup: ; preds = %if.end.50, %cond.end, %land.lhs.true, %bb0
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ret void
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}
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@yy_c_buf_p = external unnamed_addr global i8*, align 4
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@dfg_text = external global i8*, align 4
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define void @dfg_lex() {
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;CHECK-LABEL: dfg_lex
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entry:
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br label %while.bodythread-pre-split
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while.bodythread-pre-split: ; preds = %while.end, %while.end, %entry
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br i1 undef, label %if.then.14, label %if.end.15
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if.then.14: ; preds = %while.end, %while.bodythread-pre-split
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%v1 = load i32, i32* bitcast (i8** @dfg_text to i32*), align 4
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%sub.ptr.sub = sub i32 undef, %v1
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br label %if.end.15
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if.end.15: ; preds = %if.then.14, %while.bodythread-pre-split
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%v2 = load i8*, i8** @yy_c_buf_p, align 4
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br label %while.cond.16
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while.cond.16: ; preds = %while.cond.16, %if.end.15
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br i1 undef, label %while.cond.16, label %while.end
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while.end: ; preds = %while.cond.16
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%add.ptr = getelementptr inbounds i8, i8* %v2, i32 undef
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store i8* %add.ptr, i8** @dfg_text, align 4
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%sub.ptr.rhs.cast25 = ptrtoint i8* %add.ptr to i32
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%sub.ptr.sub26 = sub i32 0, %sub.ptr.rhs.cast25
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switch i32 undef, label %sw.default [
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i32 65, label %while.bodythread-pre-split
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i32 3, label %return
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i32 57, label %while.bodythread-pre-split
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i32 60, label %if.then.14
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]
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sw.default: ; preds = %while.end
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unreachable
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return: ; preds = %while.end
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ret void
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}
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