| John Bauman | 66b8ab2 | 2014-05-06 15:57:45 -0400 | [diff] [blame] | 1 | ; All of these ands and shifts should be folded into rlw[i]nm instructions
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| 2 | ; RUN: llc < %s -march=ppc32 -o %t
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| 3 | ; RUN: not grep and %t
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| 4 | ; RUN: not grep srawi %t
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| 5 | ; RUN: not grep srwi %t
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| 6 | ; RUN: not grep slwi %t
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| 7 | ; RUN: grep rlwnm %t | count 1
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| 8 | ; RUN: grep rlwinm %t | count 1
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| 9 |
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| 10 | define i32 @test1(i32 %X, i32 %Y) {
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| 11 | entry:
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| 12 | %tmp = trunc i32 %Y to i8 ; <i8> [#uses=2]
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| 13 | %tmp1 = shl i32 %X, %Y ; <i32> [#uses=1]
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| 14 | %tmp2 = sub i32 32, %Y ; <i8> [#uses=1]
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| 15 | %tmp3 = lshr i32 %X, %tmp2 ; <i32> [#uses=1]
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| 16 | %tmp4 = or i32 %tmp1, %tmp3 ; <i32> [#uses=1]
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| 17 | %tmp6 = and i32 %tmp4, 127 ; <i32> [#uses=1]
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| 18 | ret i32 %tmp6
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| 19 | }
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| 20 |
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| 21 | define i32 @test2(i32 %X) {
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| 22 | entry:
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| 23 | %tmp1 = lshr i32 %X, 27 ; <i32> [#uses=1]
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| 24 | %tmp2 = shl i32 %X, 5 ; <i32> [#uses=1]
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| 25 | %tmp2.masked = and i32 %tmp2, 96 ; <i32> [#uses=1]
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| 26 | %tmp5 = or i32 %tmp1, %tmp2.masked ; <i32> [#uses=1]
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| 27 | ret i32 %tmp5
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| 28 | }
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