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TheRock/compiler/amd-llvm/llvm/test/CodeGen/X86/codegen-prepare-replacephi.mir
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# RUN: llc -run-pass=codegenprepare -o - %s | FileCheck %s
# REQUIRES: default_triple
# This testcase without the accompanying fix triggers the assert
# "Replacement PHI node is already replaced."
--- |
define void @f1(i1 %arg) {
entry:
%arrayidx = getelementptr inbounds [2 x i16], ptr undef, i16 0, i16 2
br label %for.cond
for.cond:
%0 = phi ptr [ %arrayidx, %entry ], [ %5, %cleanup ]
%1 = phi ptr [ %arrayidx, %entry ], [ %7, %cleanup ]
br label %for.body
for.body:
%2 = phi ptr [ %1, %for.cond ], [ %7, %cleanup ]
%3 = phi ptr [ %0, %for.cond ], [ %7, %cleanup ]
%4 = phi ptr [ %0, %for.cond ], [ %7, %cleanup ]
br i1 false, label %for.cond2, label %if.then
if.then:
store i32 undef, ptr %2, align 1
unreachable
for.cond2:
%5 = phi ptr [ %4, %for.body ], [ %5, %if.then5 ], [ undef, %for.cond2 ]
%6 = phi ptr [ %3, %for.body ], [ %6, %if.then5 ], [ undef, %for.cond2 ]
%7 = phi ptr [ %2, %for.body ], [ %6, %if.then5 ], [ undef, %for.cond2 ]
br i1 %arg, label %for.cond2, label %if.then5
if.then5:
br i1 %arg, label %cleanup, label %for.cond2
cleanup:
br i1 true, label %for.cond, label %for.body
}
...
# A check to verify that something got through.
# CHECK-LABEL: entry: