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34 lines
1008 B
34 lines
1008 B
4 months ago
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; RUN: opt -hexagon-loop-idiom < %s -mtriple=hexagon-unknown-unknown -S \
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; RUN: | FileCheck %s
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target triple = "hexagon"
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; CHECK: define i64 @basic_pmpy
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; CHECK: llvm.hexagon.M4.pmpyw
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define i64 @basic_pmpy(i32 %P, i32 %Q) #0 {
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entry:
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%conv = zext i32 %Q to i64
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br label %for.body
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for.body: ; preds = %entry, %for.body
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%i.07 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%R.06 = phi i64 [ 0, %entry ], [ %xor.R.06, %for.body ]
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%shl = shl i32 1, %i.07
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%and = and i32 %shl, %P
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%tobool = icmp eq i32 %and, 0
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%sh_prom = zext i32 %i.07 to i64
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%shl1 = shl i64 %conv, %sh_prom
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%xor = xor i64 %shl1, %R.06
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%xor.R.06 = select i1 %tobool, i64 %R.06, i64 %xor
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%inc = add nuw nsw i32 %i.07, 1
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%exitcond = icmp ne i32 %inc, 32
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br i1 %exitcond, label %for.body, label %for.end
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for.end: ; preds = %for.body
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%R.1.lcssa = phi i64 [ %xor.R.06, %for.body ]
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ret i64 %R.1.lcssa
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}
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attributes #0 = { nounwind }
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