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fa34d31aa4
successors) and use inverse depth first search to traverse the BBs. However that doesn't work when the CFG has infinite loops. Simply do a linear traversal of all BBs work just fine. rdar://9344645 llvm-svn: 130324
60 lines
1.2 KiB
LLVM
60 lines
1.2 KiB
LLVM
; RUN: llc < %s -mtriple=thumbv7-apple-ios
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; If converter was being too cute. It look for root BBs (which don't have
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; successors) and use inverse depth first search to traverse the BBs. However
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; that doesn't work when the CFG has infinite loops. Simply do a linear
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; traversal of all BBs work just fine.
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; rdar://9344645
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%struct.hc = type { i32, i32, i32, i32 }
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define i32 @t(i32 %type) optsize {
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entry:
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br i1 undef, label %if.then, label %if.else
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if.then:
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unreachable
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if.else:
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br i1 undef, label %if.then15, label %if.else18
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if.then15:
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unreachable
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if.else18:
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switch i32 %type, label %if.else173 [
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i32 3, label %if.then115
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i32 1, label %if.then102
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]
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if.then102:
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br i1 undef, label %cond.true10.i, label %t.exit
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cond.true10.i:
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br label %t.exit
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t.exit:
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unreachable
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if.then115:
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br i1 undef, label %if.else163, label %if.else145
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if.else145:
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%call150 = call fastcc %struct.hc* @foo(%struct.hc* undef, i32 34865152) optsize
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br label %while.body172
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if.else163:
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%call168 = call fastcc %struct.hc* @foo(%struct.hc* undef, i32 34078720) optsize
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br label %while.body172
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while.body172:
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br label %while.body172
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if.else173:
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ret i32 -1
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}
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declare hidden fastcc %struct.hc* @foo(%struct.hc* nocapture, i32) nounwind optsize
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