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23c462a8b5
This allows targets to make more decisions about reserved registers after isel. For example, now it should be certain there are calls or stack objects in the frame or not, which could have been introduced by legalization. Patch by Matthias Braun llvm-svn: 363757
45 lines
2.1 KiB
LLVM
Executable File
45 lines
2.1 KiB
LLVM
Executable File
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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;RUN: llc < %s -mtriple=i686 -mattr=sse4.1 -stop-after=finalize-isel 2>&1 | FileCheck %s
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; This test makes sure we discard pointer info when we combine a vector load
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; and a variable extractelement into a scalar load using an index. There's also
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; a test to ensure we don't discard it for the constant index case.
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; CHECK: name: const_index
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; CHECK: bb.0 (%ir-block.0):
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; CHECK: [[POINTER:%[0-9]+]]:gr32 = MOV32rm %fixed-stack.0, 1, $noreg, 0, $noreg :: (load 4 from %fixed-stack.0)
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; CHECK: [[LOAD:%[0-9]+]]:gr32 = MOV32rm killed [[POINTER]], 1, $noreg, 4, $noreg :: (load 4 from %ir.v + 4)
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; CHECK: $eax = COPY [[LOAD]]
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; CHECK: RET 0, $eax
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define i32 @const_index(<8 x i32>* %v) {
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%a = load <8 x i32>, <8 x i32>* %v
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%b = extractelement <8 x i32> %a, i32 1
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ret i32 %b
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}
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; CHECK: name: variable_index
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; CHECK: bb.0 (%ir-block.0):
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; CHECK: [[INDEX:%[0-9]+]]:gr32_nosp = MOV32rm %fixed-stack.0, 1, $noreg, 0, $noreg :: (load 4 from %fixed-stack.0)
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; CHECK: [[POINTER:%[0-9]+]]:gr32 = MOV32rm %fixed-stack.1, 1, $noreg, 0, $noreg :: (load 4 from %fixed-stack.1)
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; CHECK: [[LOAD:%[0-9]+]]:gr32 = MOV32rm killed [[POINTER]], 4, killed [[INDEX]], 0, $noreg :: (load 4)
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; CHECK: $eax = COPY [[LOAD]]
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; CHECK: RET 0, $eax
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define i32 @variable_index(<8 x i32>* %v, i32 %i) {
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%a = load <8 x i32>, <8 x i32>* %v
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%b = extractelement <8 x i32> %a, i32 %i
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ret i32 %b
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}
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; CHECK: name: variable_index_with_addrspace
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; CHECK: bb.0 (%ir-block.0):
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; CHECK: [[INDEX:%[0-9]+]]:gr32_nosp = MOV32rm %fixed-stack.0, 1, $noreg, 0, $noreg :: (load 4 from %fixed-stack.0)
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; CHECK: [[POINTER:%[0-9]+]]:gr32 = MOV32rm %fixed-stack.1, 1, $noreg, 0, $noreg :: (load 4 from %fixed-stack.1)
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; CHECK: [[LOAD:%[0-9]+]]:gr32 = MOV32rm killed [[POINTER]], 4, killed [[INDEX]], 0, $noreg :: (load 4, addrspace 1)
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; CHECK: $eax = COPY [[LOAD]]
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; CHECK: RET 0, $eax
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define i32 @variable_index_with_addrspace(<8 x i32> addrspace(1)* %v, i32 %i) {
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%a = load <8 x i32>, <8 x i32> addrspace(1)* %v
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%b = extractelement <8 x i32> %a, i32 %i
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ret i32 %b
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}
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