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54a000e514
isLegalAddressingMode() has recently gained the extra optional Instruction* parameter, and therefore it can now do the job that previously only isFoldableMemAccess() could do. The SystemZ implementation of isLegalAddressingMode() has gained the functionality of checking for offsets, which used to be done with isFoldableMemAccess(). The isFoldableMemAccess() hook has been removed everywhere. Review: Quentin Colombet, Ulrich Weigand https://reviews.llvm.org/D35933 llvm-svn: 310463
52 lines
1.5 KiB
LLVM
52 lines
1.5 KiB
LLVM
; RUN: llc -march=hexagon -mcpu=hexagonv5 -enable-pipeliner -verify-machineinstrs < %s | FileCheck %s
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; If the trip count is a compile-time constant, then decrement it instead
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; of computing a new LC0 value.
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; CHECK-LABEL: @test
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; CHECK: loop0(.LBB0_1,#999)
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define i32 @test(i32* %A, i32* %B, i32 %count) {
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entry:
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br label %for.body
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for.body:
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%sum.02 = phi i32 [ 0, %entry ], [ %add, %for.body ]
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%arrayidx.phi = phi i32* [ %A, %entry ], [ %arrayidx.inc, %for.body ]
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%i.01 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%0 = load i32, i32* %arrayidx.phi, align 4
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%add = add nsw i32 %0, %sum.02
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%inc = add nsw i32 %i.01, 1
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%exitcond = icmp eq i32 %inc, 1000
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%arrayidx.inc = getelementptr i32, i32* %arrayidx.phi, i32 1
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret i32 %add
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}
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; The constant trip count is small enough that the kernel is not executed.
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; CHECK-LABEL: @test1
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; CHECK-NOT: loop0(
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define i32 @test1(i32* %A, i32* %B, i32 %count) {
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entry:
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br label %for.body
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for.body:
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%sum.02 = phi i32 [ 0, %entry ], [ %add, %for.body ]
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%arrayidx.phi = phi i32* [ %A, %entry ], [ %arrayidx.inc, %for.body ]
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%i.01 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%0 = load i32, i32* %arrayidx.phi, align 4
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%add = add nsw i32 %0, %sum.02
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%inc = add nsw i32 %i.01, 1
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%exitcond = icmp eq i32 %inc, 1
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%arrayidx.inc = getelementptr i32, i32* %arrayidx.phi, i32 1
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret i32 %add
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}
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