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4646e714c4
shift constant expressions, and add support for folding vector shift constant expressions. This fixes PR3802. llvm-svn: 67010
33 lines
1.0 KiB
LLVM
33 lines
1.0 KiB
LLVM
; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | grep shl | count 1
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; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | grep ashr | count 1
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; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | grep lshr | count 1
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define <4 x i32> @foo(<4 x i32> %a, <4 x i32> %b) nounwind {
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entry:
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%cmp = shl <4 x i32> %a, %b ; <4 x i32> [#uses=1]
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ret <4 x i32> %cmp
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}
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define <4 x i32> @bar(<4 x i32> %a, <4 x i32> %b) nounwind {
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entry:
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%cmp = lshr <4 x i32> %a, %b ; <4 x i32> [#uses=1]
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ret <4 x i32> %cmp
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}
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define <4 x i32> @baz(<4 x i32> %a, <4 x i32> %b) nounwind {
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entry:
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%cmp = ashr <4 x i32> %a, %b ; <4 x i32> [#uses=1]
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ret <4 x i32> %cmp
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}
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; Constant expressions: these should be folded.
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define <2 x i64> @foo_ce() nounwind {
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ret <2 x i64> shl (<2 x i64> <i64 5, i64 6>, <2 x i64> <i64 3, i64 5>)
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}
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define <2 x i64> @bar_ce() nounwind {
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ret <2 x i64> lshr (<2 x i64> <i64 340, i64 380>, <2 x i64> <i64 3, i64 5>)
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}
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define <2 x i64> @baz_ce() nounwind {
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ret <2 x i64> ashr (<2 x i64> <i64 573, i64 411>, <2 x i64> <i64 3, i64 5>)
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}
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