forked from OSchip/llvm-project
24 lines
803 B
LLVM
24 lines
803 B
LLVM
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; RUN: llc -march=hexagon < %s | FileCheck %s
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; The result of max(half-word, half-word) is also half-word.
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; Check that we are not producing a sign extend after the max.
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; CHECK-NOT: sxth
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define i64 @test_cast(i64 %arg0, i16 zeroext %arg1, i16 zeroext %arg2) nounwind readnone {
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entry:
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%conv.i = zext i16 %arg1 to i32
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%conv1.i = zext i16 %arg2 to i32
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%sub.i = sub nsw i32 %conv.i, %conv1.i
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%sext.i = shl i32 %sub.i, 16
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%cmp.i = icmp slt i32 %sext.i, 65536
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%0 = ashr exact i32 %sext.i, 16
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%conv7.i = select i1 %cmp.i, i32 1, i32 %0
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%cmp8.i = icmp sgt i32 %conv7.i, 4
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%conv7.op.i = add i32 %conv7.i, 65535
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%shl = shl i64 %arg0, 2
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%.mask = and i32 %conv7.op.i, 65535
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%1 = zext i32 %.mask to i64
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%conv = select i1 %cmp8.i, i64 3, i64 %1
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%or = or i64 %conv, %shl
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ret i64 %or
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}
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