cdb9738963
Bug noted in D112717 can be sidestepped with this change. Expanding all ConstantExpr involved with LDS up front makes the variable specialisation simpler. Excludes ConstantExpr that don't access LDS to avoid disturbing codegen elsewhere. Reviewed By: rampitec Differential Revision: https://reviews.llvm.org/D133422
46 lines
1.4 KiB
LLVM
46 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -mtriple=amdgcn-- -amdgpu-lower-module-lds < %s | FileCheck %s
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; RUN: opt -S -mtriple=amdgcn-- -passes=amdgpu-lower-module-lds < %s | FileCheck %s
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@var = addrspace(3) global i32 undef, align 4
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; Regression test. Duplicate constantexpr in phi nodes shall not emit broken IR
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define amdgpu_kernel void @func(i32 %c) {
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; CHECK-LABEL: @func(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: switch i32 [[C:%.*]], label [[RETURN:%.*]] [
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; CHECK-NEXT: i32 0, label [[BB0:%.*]]
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; CHECK-NEXT: i32 1, label [[BB1:%.*]]
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; CHECK-NEXT: ]
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; CHECK: bb0:
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; CHECK-NEXT: [[TMP0:%.*]] = addrspacecast ptr addrspace(3) @llvm.amdgcn.kernel.func.lds to ptr
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; CHECK-NEXT: br label [[BB2:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: [[TMP1:%.*]] = addrspacecast ptr addrspace(3) @llvm.amdgcn.kernel.func.lds to ptr
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; CHECK-NEXT: br label [[BB2]]
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; CHECK: bb2:
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; CHECK-NEXT: [[TMP:%.*]] = phi ptr [ [[TMP0]], [[BB0]] ], [ [[TMP1]], [[BB1]] ]
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; CHECK-NEXT: br label [[RETURN]]
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; CHECK: return:
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; CHECK-NEXT: ret void
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;
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entry:
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switch i32 %c, label %return [
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i32 0, label %bb0
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i32 1, label %bb1
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]
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bb0:
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br label %bb2
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bb1:
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br label %bb2
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bb2:
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%tmp = phi ptr [ addrspacecast (ptr addrspace(3) @var to ptr), %bb0 ], [ addrspacecast (ptr addrspace(3) @var to ptr), %bb1 ]
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br label %return
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return:
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ret void
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}
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