18f9351223
The compiler was generating symbols in the final code object for local branch target labels. This bloats the code object, slows down the loader, and is only used to simplify disassembly. Use '--symbolize-operands' with llvm-objdump to improve readability of the branch target operands in disassembly. Fixes: SWDEV-312223 Reviewed By: scott.linder Differential Revision: https://reviews.llvm.org/D114273
40 lines
1.1 KiB
LLVM
40 lines
1.1 KiB
LLVM
; RUN: llc < %s -march=amdgcn -verify-machineinstrs | FileCheck %s
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; This tests that the llvm.SI.end.cf intrinsic is not inserted into the
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; loop block. This intrinsic will be lowered to s_or_b64 by the code
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; generator.
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; CHECK-LABEL: {{^}}test:
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; This is was lowered from the llvm.SI.end.cf intrinsic:
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; CHECK: s_or_b64 exec, exec
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; CHECK: [[LOOP_LABEL:.L[0-9A-Za-z_]+]]: ; %loop{{$}}
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; CHECK-NOT: s_or_b64 exec, exec
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; CHECK: s_cbranch_execnz [[LOOP_LABEL]]
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define amdgpu_kernel void @test(i32 addrspace(1)* %out) {
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entry:
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%cond = call i32 @llvm.amdgcn.workitem.id.x() #0
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%tmp0 = icmp eq i32 %cond, 0
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br i1 %tmp0, label %if, label %loop
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if:
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store i32 0, i32 addrspace(1)* %out
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br label %loop
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loop:
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%tmp1 = phi i32 [0, %entry], [0, %if], [%inc, %loop]
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%inc = add i32 %tmp1, %cond
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%tmp2 = icmp ugt i32 %inc, 10
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br i1 %tmp2, label %done, label %loop
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done:
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%tmp3 = getelementptr i32, i32 addrspace(1)* %out, i64 1
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store i32 %inc, i32 addrspace(1)* %tmp3
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ret void
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}
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declare i32 @llvm.amdgcn.workitem.id.x() #0
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attributes #0 = { nounwind readnone }
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