46 lines
1.5 KiB
LLVM
46 lines
1.5 KiB
LLVM
; RUN: opt -mtriple=arm-arm-eabi -mcpu=cortex-m33 < %s -arm-parallel-dsp -S | FileCheck %s
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;
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; Muls with operands that are constants: not yet supported, so the rewrite
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; should not trigger (but we do want to add this soon).
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;
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; CHECK-NOT: call i32 @llvm.arm.smlad
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;
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define dso_local i32 @test(i32 %arg, i32* nocapture readnone %arg1, i16* nocapture readonly %arg2, i16* nocapture readonly %arg3) {
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entry:
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%cmp24 = icmp sgt i32 %arg, 0
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br i1 %cmp24, label %for.body.preheader, label %for.cond.cleanup
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for.body.preheader:
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%.pre = load i16, i16* %arg3, align 2
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%.pre27 = load i16, i16* %arg2, align 2
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br label %for.body
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for.cond.cleanup:
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%mac1.0.lcssa = phi i32 [ 0, %entry ], [ %add11, %for.body ]
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ret i32 %mac1.0.lcssa
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for.body:
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%mac1.026 = phi i32 [ %add11, %for.body ], [ 0, %for.body.preheader ]
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%i.025 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ]
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%add = add nuw nsw i32 %i.025, 1
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%arrayidx3 = getelementptr inbounds i16, i16* %arg2, i32 %i.025
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%v2 = load i16, i16* %arrayidx3, align 2
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%conv = sext i16 %v2 to i32
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; RHS operand of this mul is a constant
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%mul = mul nsw i32 %conv, 43
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%arrayidx6 = getelementptr inbounds i16, i16* %arg2, i32 %add
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%v3 = load i16, i16* %arrayidx6, align 2
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%conv7 = sext i16 %v3 to i32
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; And this RHS operand is a constant too.
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%mul9 = mul nsw i32 %conv7, 42
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%add10 = add i32 %mul, %mac1.026
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%add11 = add i32 %mul9, %add10
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%exitcond = icmp ne i32 %add, %arg
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br i1 %exitcond, label %for.body, label %for.cond.cleanup
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}
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