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9455887b10
Currently the output should be almost identical to the one produced by CodeGen to make the transition easier. The only two differences I know of are: * Some files get an extra advance loc of size 0. This will be fixed when relaxations are enabled. * The optimization of declaring an EH symbol as an external variable is not implemented. This is a subset of adding the nounwind attribute, so we if really this at -O0 we should probably do it at the IL level. llvm-svn: 130623
18 lines
621 B
LLVM
18 lines
621 B
LLVM
; All of these ands and shifts should be folded into rlwimi's
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; RUN: llc < %s -march=ppc32 -o %t
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; RUN: not grep mulhwu %t
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; RUN: not grep srawi %t
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; RUN: not grep add %t
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; RUN: grep mulhw %t | count 1
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define i32 @mulhs(i32 %a, i32 %b) nounwind {
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entry:
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%tmp.1 = sext i32 %a to i64 ; <i64> [#uses=1]
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%tmp.3 = sext i32 %b to i64 ; <i64> [#uses=1]
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%tmp.4 = mul i64 %tmp.3, %tmp.1 ; <i64> [#uses=1]
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%tmp.6 = lshr i64 %tmp.4, 32 ; <i64> [#uses=1]
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%tmp.7 = trunc i64 %tmp.6 to i32 ; <i32> [#uses=1]
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ret i32 %tmp.7
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}
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