e3e06135eb
After internal intrinsic 'spv_switch' is processed we need to delete G_BLOCK_ADDR instructions that were generated to keep track of the corresponding basic blocks. If we just delete G_BLOCK_ADDR instructions with BlockAddress operands, this leaves their BasicBlock counterparts in a "address taken" status. This would make AsmPrinter to generate a series of unneeded labels of a `"Address of block that was removed by CodeGen"` kind. This PR is to ensure that we don't have a dangling BlockAddress constants by zapping the BlockAddress nodes, and only after that proceed with erasing G_BLOCK_ADDR instructions. See also https://github.com/llvm/llvm-project/pull/87823 for more details.
77 lines
1.6 KiB
LLVM
77 lines
1.6 KiB
LLVM
; RUN: llc -O0 -mtriple=spirv32-unknown-unknown %s -o - | FileCheck %s
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; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv32-unknown-unknown %s -o - -filetype=obj | spirv-val %}
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; CHECK: OpFunction
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; CHECK: %[[#Var:]] = OpPhi
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; CHECK: OpSwitch %[[#Var]] %[[#]] [[#]] %[[#]] [[#]] %[[#]] [[#]] %[[#]] [[#]] %[[#]] [[#]] %[[#]] [[#]] %[[#]] [[#]] %[[#]] [[#]] %[[#]] [[#]] %[[#]] [[#]] %[[#]] [[#]] %[[#]] [[#]] %[[#]]
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; CHECK-COUNT-11: OpBranch
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; CHECK-NOT: OpBranch
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; CHECK: OpReturn
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; CHECK-NEXT: OpFunctionEnd
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define spir_func void @foo(i64 noundef %addr, i64 noundef %as) {
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entry:
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%src = inttoptr i64 %as to ptr addrspace(4)
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%val = load i8, ptr addrspace(4) %src
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%cmp = icmp sgt i8 %val, 0
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br i1 %cmp, label %if.then, label %if.end
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if.then:
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%add.ptr = getelementptr inbounds i8, ptr addrspace(4) %src, i64 1
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%cond = load i8, ptr addrspace(4) %add.ptr
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br label %if.end
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if.end:
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%swval = phi i8 [ %cond, %if.then ], [ %val, %entry ]
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switch i8 %swval, label %sw.default [
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i8 -127, label %sw.epilog
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i8 -126, label %sw.bb3
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i8 -125, label %sw.bb4
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i8 -111, label %sw.bb5
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i8 -110, label %sw.bb6
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i8 -109, label %sw.bb7
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i8 -15, label %sw.bb8
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i8 -14, label %sw.bb8
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i8 -13, label %sw.bb8
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i8 -124, label %sw.bb9
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i8 -95, label %sw.bb10
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i8 -123, label %sw.bb11
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]
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sw.bb3:
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br label %sw.epilog
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sw.bb4:
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br label %sw.epilog
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sw.bb5:
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br label %sw.epilog
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sw.bb6:
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br label %sw.epilog
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sw.bb7:
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br label %sw.epilog
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sw.bb8:
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br label %sw.epilog
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sw.bb9:
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br label %sw.epilog
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sw.bb10:
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br label %sw.epilog
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sw.bb11:
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br label %sw.epilog
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sw.default:
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br label %sw.epilog
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sw.epilog:
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br label %exit
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exit:
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ret void
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}
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