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40e455d992
SI_IF and SI_ELSE are terminators which also produce a value. For these instructions ISel always inserts a COPY to move their value to another basic block. This COPY ends up between SI_(IF|ELSE) and the S_BRANCH* instruction at the end of the block. This breaks MachineBasicBlock::getFirstTerminator() and also the machine verifier which assumes that terminators are grouped together at the end of blocks. To solve this we coalesce the copy away right after ISel to make sure there are no instructions in between terminators at the end of blocks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207591 91177308-0d34-0410-b5e6-96231b3b80d8
35 lines
1005 B
LLVM
35 lines
1005 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: DS_READ_B32 v{{[0-9]+}}, [[VREG1]], 0x14
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; CHECK: DS_READ_B32 v{{[0-9]+}}, v{{[0-9]+}}, 0xc
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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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