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c9c70b1651
This currently has a noticable effect on the kernel argument loads. LDS and global loads are more problematic, I think because of how copies are currently inserted to ensure that the address is a VGPR. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214942 91177308-0d34-0410-b5e6-96231b3b80d8
35 lines
1014 B
LLVM
35 lines
1014 B
LLVM
; RUN: llc -march=r600 -mcpu=SI -verify-machineinstrs < %s | FileCheck %s
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; Test that codegenprepare understands address space sizes
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%struct.foo = type { [3 x float], [3 x float] }
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; FIXME: Extra V_MOV from SGPR to VGPR for second read. The address is
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; already in a VGPR after the first read.
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; CHECK-LABEL: @do_as_ptr_calcs:
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; CHECK: S_LOAD_DWORD [[SREG1:s[0-9]+]],
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; CHECK: V_MOV_B32_e32 [[VREG1:v[0-9]+]], [[SREG1]]
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; CHECK-DAG: DS_READ_B32 v{{[0-9]+}}, [[VREG1]], 0xc
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; CHECK-DAG: DS_READ_B32 v{{[0-9]+}}, v{{[0-9]+}}, 0x14
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define void @do_as_ptr_calcs(%struct.foo addrspace(3)* nocapture %ptr) nounwind {
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entry:
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%x = getelementptr inbounds %struct.foo addrspace(3)* %ptr, i32 0, i32 1, i32 0
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%y = getelementptr inbounds %struct.foo addrspace(3)* %ptr, i32 0, i32 1, i32 2
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br label %bb32
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bb32:
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%a = load float addrspace(3)* %x, align 4
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%b = load float addrspace(3)* %y, align 4
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%cmp = fcmp one float %a, %b
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br i1 %cmp, label %bb34, label %bb33
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bb33:
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unreachable
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bb34:
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unreachable
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}
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