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| author | Krzysztof Parzyszek <kparzysz@codeaurora.org> | 2016-05-13 18:48:15 +0000 |
|---|---|---|
| committer | Krzysztof Parzyszek <kparzysz@codeaurora.org> | 2016-05-13 18:48:15 +0000 |
| commit | 0f791f44c72bc5b52dfb31bcf6b6fe4f411d5fd2 (patch) | |
| tree | 8c8b7e6b25ae2061b509f3fcbe9f6de0f2731c5f /llvm/test/CodeGen | |
| parent | a87b766027322ef8e2fed8843aad5df67a9ecf68 (diff) | |
| download | bcm5719-llvm-0f791f44c72bc5b52dfb31bcf6b6fe4f411d5fd2.tar.gz bcm5719-llvm-0f791f44c72bc5b52dfb31bcf6b6fe4f411d5fd2.zip | |
[Hexagon] Remove dead nodes from SelectionDAG to avoid cycles
Recent changes to the instruction selection code exposed a problem where
a dead node was not removed on time. This node had both input and output
chains, which lead to an apparent cycle.
llvm-svn: 269458
Diffstat (limited to 'llvm/test/CodeGen')
| -rw-r--r-- | llvm/test/CodeGen/Hexagon/circ-load-isel.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Hexagon/circ-load-isel.ll b/llvm/test/CodeGen/Hexagon/circ-load-isel.ll new file mode 100644 index 00000000000..576fbdf53cf --- /dev/null +++ b/llvm/test/CodeGen/Hexagon/circ-load-isel.ll @@ -0,0 +1,18 @@ +; RUN: llc -march=hexagon < %s | FileCheck %s +; CHECK: = memw{{.*}}circ + +target triple = "hexagon" + +@l = external global i32, align 4 + +; Function Attrs: nounwind optsize +define void @circ2() #0 { +entry: + store i32 0, i32* @l, align 4 + %0 = tail call i8* @llvm.hexagon.circ.ldw(i8* undef, i8* undef, i32 150995968, i32 4) + unreachable +} + +declare i8* @llvm.hexagon.circ.ldw(i8*, i8*, i32, i32) #1 +attributes #0 = { nounwind optsize } +attributes #1 = { argmemonly nounwind } |
