derek.holloway
7502bf64a4
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47 lines
2.3 KiB
LLVM
47 lines
2.3 KiB
LLVM
; 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 (s32) from %fixed-stack.0)
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; CHECK: [[LOAD:%[0-9]+]]:gr32 = MOV32rm killed [[POINTER]], 1, $noreg, 4, $noreg :: (load (s32) 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(ptr %v) {
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%a = load <8 x i32>, ptr %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 = MOV32rm %fixed-stack.0, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.0)
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; CHECK: [[MASKED_INDEX:%[0-9]+]]:gr32_nosp = AND32ri [[INDEX]], 7, implicit-def dead $eflags
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; CHECK: [[POINTER:%[0-9]+]]:gr32 = MOV32rm %fixed-stack.1, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.1)
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; CHECK: [[LOAD:%[0-9]+]]:gr32 = MOV32rm killed [[POINTER]], 4, killed [[MASKED_INDEX]], 0, $noreg :: (load (s32))
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; CHECK: $eax = COPY [[LOAD]]
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; CHECK: RET 0, $eax
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define i32 @variable_index(ptr %v, i32 %i) {
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%a = load <8 x i32>, ptr %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 = MOV32rm %fixed-stack.0, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.0)
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; CHECK: [[MASKED_INDEX:%[0-9]+]]:gr32_nosp = AND32ri [[INDEX]], 7, implicit-def dead $eflags
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; CHECK: [[POINTER:%[0-9]+]]:gr32 = MOV32rm %fixed-stack.1, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.1)
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; CHECK: [[LOAD:%[0-9]+]]:gr32 = MOV32rm killed [[POINTER]], 4, killed [[MASKED_INDEX]], 0, $noreg :: (load (s32), 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(ptr addrspace(1) %v, i32 %i) {
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%a = load <8 x i32>, ptr 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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