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author | Tom Stellard <thomas.stellard@amd.com> | 2014-03-24 18:21:27 +0000 |
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committer | Tom Stellard <thomas.stellard@amd.com> | 2014-03-24 18:21:27 +0000 |
commit | 6392836b79fc7d525323b5680f1a90d8b6e47c6d (patch) | |
tree | 7fdaf842c54db073415cf0ea3d9e84d86c297a59 /test | |
parent | cba1dff815e76b1650a2f68cc7a449ea12aef464 (diff) | |
download | llvm-6392836b79fc7d525323b5680f1a90d8b6e47c6d.tar.gz llvm-6392836b79fc7d525323b5680f1a90d8b6e47c6d.tar.bz2 llvm-6392836b79fc7d525323b5680f1a90d8b6e47c6d.tar.xz |
Merging r199917:
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r199917 | thomas.stellard | 2014-01-23 10:49:31 -0800 (Thu, 23 Jan 2014) | 6 lines
R600: Correctly handle vertex fetch clauses the precede ENDIFs
The control flow finalizer would sometimes use an ALU_POP_AFTER
instruction before the vetex fetch clause instead of using a POP
instruction after it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@204639 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
-rw-r--r-- | test/CodeGen/R600/vtx-fetch-branch.ll | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/test/CodeGen/R600/vtx-fetch-branch.ll b/test/CodeGen/R600/vtx-fetch-branch.ll new file mode 100644 index 0000000000..0fc99dee0d --- /dev/null +++ b/test/CodeGen/R600/vtx-fetch-branch.ll @@ -0,0 +1,29 @@ +; RUN: llc -march=r600 -mcpu=redwood %s -o - | FileCheck %s + +; This tests for a bug where vertex fetch clauses right before an ENDIF +; instruction where being emitted after the ENDIF. We were using ALU_POP_AFTER +; for the ALU clause before the vetex fetch instead of emitting a POP instruction +; after the fetch clause. + + +; CHECK-LABEL: @test +; CHECK-NOT: ALU_POP_AFTER +; CHECK: TEX +; CHECK-NEXT: POP +define void @test(i32 addrspace(1)* %out, i32 addrspace(1)* %in, i32 %cond) { +entry: + %0 = icmp eq i32 %cond, 0 + br i1 %0, label %endif, label %if + +if: + %1 = load i32 addrspace(1)* %in + br label %endif + +endif: + %x = phi i32 [ %1, %if], [ 0, %entry] + store i32 %x, i32 addrspace(1)* %out + br label %done + +done: + ret void +} |