2019-03-15 21:51:05 +08:00
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# RUN: llc -run-pass=codegenprepare -o - %s | FileCheck %s
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2019-03-28 04:43:47 +08:00
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# REQUIRES: default_triple
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2019-03-15 21:51:05 +08:00
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# This testcase without the accompanying fix triggers the assert
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# "Replacement PHI node is already replaced."
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--- |
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define void @f1() {
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entry:
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%arrayidx = getelementptr inbounds [2 x i16], [2 x i16]* undef, i16 0, i16 2
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%0 = bitcast i16* %arrayidx to i32*
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%1 = bitcast [2 x i16]* undef to i32*
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br label %for.cond
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for.cond:
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%2 = phi i32* [ %0, %entry ], [ %7, %cleanup ]
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%3 = phi i32* [ %0, %entry ], [ %9, %cleanup ]
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br label %for.body
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for.body:
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%4 = phi i32* [ %3, %for.cond ], [ %9, %cleanup ]
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%5 = phi i32* [ %2, %for.cond ], [ %9, %cleanup ]
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%6 = phi i32* [ %2, %for.cond ], [ %9, %cleanup ]
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br i1 false, label %for.cond2, label %if.then
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if.then:
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store i32 undef, i32* %4, align 1
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unreachable
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for.cond2:
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%7 = phi i32* [ %6, %for.body ], [ %7, %if.then5 ], [ %1, %for.cond2 ]
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%8 = phi i32* [ %5, %for.body ], [ %8, %if.then5 ], [ %1, %for.cond2 ]
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%9 = phi i32* [ %4, %for.body ], [ %8, %if.then5 ], [ %1, %for.cond2 ]
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br i1 undef, label %for.cond2, label %if.then5
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if.then5:
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br i1 undef, label %cleanup, label %for.cond2
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cleanup:
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br i1 true, label %for.cond, label %for.body
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}
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...
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# Sanity check to verify that something got through.
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# CHECK-LABEL: entry:
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