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https://github.com/ROCm/ROCm.git
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d3956a21f3
Add infrastructure to be able to add and test custom LLVM passes in the backend. This will allow use to apply some low level optimizations and cleanup on LLVM IR. Add a first pass that breaks up phi of struct created by lowering to LLVM. Those can often pessimise the optimizer as it would block optimizations going through phi nodes.
34 lines
1.1 KiB
LLVM
34 lines
1.1 KiB
LLVM
; RUN: triton-llvm-opt -break-struct-phi-nodes %s | FileCheck %s
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; CHECK-LABEL: struct
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define {i32, i32} @struct(i1 %c) {
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; CHECK: br i1 %{{.*}}, label [[TRUE:%.*]], label [[FALSE:%.*]]
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br i1 %c, label %true, label %false
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true:
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%s.1 = insertvalue {i32, i32} undef, i32 20, 0
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%s.2 = insertvalue {i32, i32} %s.1, i32 200, 1
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; CHECK-DAG: [[E0:%.*]] = extractvalue { i32, i32 } %{{.*}}, 0
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; CHECK-DAG: [[E1:%.*]] = extractvalue { i32, i32 } %{{.*}}, 1
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; CHECK: br
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br label %exit
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false:
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%s.3 = insertvalue {i32, i32} undef, i32 30, 0
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%s.4 = insertvalue {i32, i32} %s.3, i32 300, 1
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; CHECK-DAG: [[E2:%.*]] = extractvalue { i32, i32 } %{{.*}}, 0
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; CHECK-DAG: [[E3:%.*]] = extractvalue { i32, i32 } %{{.*}}, 1
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; CHECK: br
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br label %exit
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exit:
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; CHECK-DAG: [[PHI0:%.*]] = phi i32 [ [[E0]], [[TRUE]] ], [ [[E2]], [[FALSE]] ]
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; CHECK-DAG: [[PHI1:%.*]] = phi i32 [ [[E1]], [[TRUE]] ], [ [[E3]], [[FALSE]] ]
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; CHECK: [[S0:%.*]] = insertvalue { i32, i32 } undef, i32 [[PHI0]], 0
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; CHECK: [[S1:%.*]] = insertvalue { i32, i32 } [[S0]], i32 [[PHI1]], 1
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; CHECK: ret { i32, i32 } [[S1]]
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%r = phi {i32, i32} [ %s.2, %true], [ %s.4, %false ]
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ret {i32, i32} %r
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}
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