f395a4f8d5
Currently generateOverflowCheck always creates code for Step being negative and positive, followed by a select at the end depending on Step's sign. This patch updates the code to only create either the checks for step being positive or negative, if the sign is known. Follow-up to D116696. Reviewed By: reames Differential Revision: https://reviews.llvm.org/D116747
54 lines
2.3 KiB
LLVM
54 lines
2.3 KiB
LLVM
; RUN: opt -loop-versioning -S < %s | FileCheck %s -check-prefix=LV
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; NB: addrspaces 10-13 are non-integral
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:10:11:12:13"
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; This matches the test case from PR38290
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; Check that we expand the SCEV predicate check using GEP, rather
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; than ptrtoint.
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%jl_value_t = type opaque
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%jl_array_t = type { i8 addrspace(13)*, i64, i16, i16, i32 }
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declare i64 @julia_steprange_last_4949()
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define void @"japi1_align!_9477"(%jl_value_t addrspace(10)** %arg) {
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; LV-LAVEL: L26.lver.check
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; LV: [[OFMul:%[^ ]*]] = call { i64, i1 } @llvm.umul.with.overflow.i64(i64 4, i64 [[Step:%[^ ]*]])
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; LV-NEXT: [[OFMulResult:%[^ ]*]] = extractvalue { i64, i1 } [[OFMul]], 0
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; LV-NEXT: [[OFMulOverflow:%[^ ]*]] = extractvalue { i64, i1 } [[OFMul]], 1
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; LV: [[OFNegMulResult:%[^ ]*]] = sub i64 0, [[OFMulResult]]
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; LV-NEXT: [[NegGEP:%[^ ]*]] = getelementptr i8, i8 addrspace(13)* [[Base:%[^ ]*]], i64 [[OFNegMulResult]]
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; LV-NEXT: icmp ugt i8 addrspace(13)* [[NegGEP]], [[Base]]
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; LV-NOT: inttoptr
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; LV-NOT: ptrtoint
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top:
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%tmp = load %jl_value_t addrspace(10)*, %jl_value_t addrspace(10)** %arg, align 8
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%tmp1 = load i32, i32* inttoptr (i64 12 to i32*), align 4
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%tmp2 = sub i32 0, %tmp1
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%tmp3 = call i64 @julia_steprange_last_4949()
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%tmp4 = addrspacecast %jl_value_t addrspace(10)* %tmp to %jl_value_t addrspace(11)*
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%tmp5 = bitcast %jl_value_t addrspace(11)* %tmp4 to %jl_value_t addrspace(10)* addrspace(11)*
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%tmp6 = load %jl_value_t addrspace(10)*, %jl_value_t addrspace(10)* addrspace(11)* %tmp5, align 8
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%tmp7 = addrspacecast %jl_value_t addrspace(10)* %tmp6 to %jl_value_t addrspace(11)*
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%tmp8 = bitcast %jl_value_t addrspace(11)* %tmp7 to i32 addrspace(13)* addrspace(11)*
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%tmp9 = load i32 addrspace(13)*, i32 addrspace(13)* addrspace(11)* %tmp8, align 8
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%tmp10 = sext i32 %tmp2 to i64
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br label %L26
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L26:
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%value_phi3 = phi i64 [ 0, %top ], [ %tmp11, %L26 ]
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%tmp11 = add i64 %value_phi3, -1
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%tmp12 = getelementptr inbounds i32, i32 addrspace(13)* %tmp9, i64 %tmp11
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%tmp13 = load i32, i32 addrspace(13)* %tmp12, align 4
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%tmp14 = add i64 %tmp11, %tmp10
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%tmp15 = getelementptr inbounds i32, i32 addrspace(13)* %tmp9, i64 %tmp14
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store i32 %tmp13, i32 addrspace(13)* %tmp15, align 4
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%tmp16 = icmp eq i64 %value_phi3, %tmp3
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br i1 %tmp16, label %L45, label %L26
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L45:
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ret void
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}
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