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30 lines
1.2 KiB
LLVM
30 lines
1.2 KiB
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: grep rlwimi %t | count 3
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; RUN: grep srwi %t | count 1
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; RUN: not grep slwi %t
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define i16 @test1(i32 %srcA, i32 %srcB, i32 %alpha) {
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entry:
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%tmp.1 = shl i32 %srcA, 15 ; <i32> [#uses=1]
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%tmp.4 = and i32 %tmp.1, 32505856 ; <i32> [#uses=1]
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%tmp.6 = and i32 %srcA, 31775 ; <i32> [#uses=1]
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%tmp.7 = or i32 %tmp.4, %tmp.6 ; <i32> [#uses=1]
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%tmp.9 = shl i32 %srcB, 15 ; <i32> [#uses=1]
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%tmp.12 = and i32 %tmp.9, 32505856 ; <i32> [#uses=1]
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%tmp.14 = and i32 %srcB, 31775 ; <i32> [#uses=1]
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%tmp.15 = or i32 %tmp.12, %tmp.14 ; <i32> [#uses=1]
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%tmp.18 = mul i32 %tmp.7, %alpha ; <i32> [#uses=1]
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%tmp.20 = sub i32 32, %alpha ; <i32> [#uses=1]
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%tmp.22 = mul i32 %tmp.15, %tmp.20 ; <i32> [#uses=1]
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%tmp.23 = add i32 %tmp.22, %tmp.18 ; <i32> [#uses=2]
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%tmp.27 = lshr i32 %tmp.23, 5 ; <i32> [#uses=1]
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%tmp.28 = trunc i32 %tmp.27 to i16 ; <i16> [#uses=1]
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%tmp.29 = and i16 %tmp.28, 31775 ; <i16> [#uses=1]
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%tmp.33 = lshr i32 %tmp.23, 20 ; <i32> [#uses=1]
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%tmp.34 = trunc i32 %tmp.33 to i16 ; <i16> [#uses=1]
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%tmp.35 = and i16 %tmp.34, 992 ; <i16> [#uses=1]
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%tmp.36 = or i16 %tmp.29, %tmp.35 ; <i16> [#uses=1]
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ret i16 %tmp.36
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}
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