62 lines
1.3 KiB
LLVM
62 lines
1.3 KiB
LLVM
; All of these ands and shifts should be folded into rlwimi's
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; RUN: llc -verify-machineinstrs < %s -mtriple=ppc32-- -o %t
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; RUN: not grep and %t
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; RUN: not grep srawi %t
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; RUN: not grep srwi %t
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; RUN: not grep slwi %t
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; RUN: grep rlwinm %t | count 8
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define i32 @test1(i32 %a) {
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entry:
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%tmp.1 = and i32 %a, 268431360 ; <i32> [#uses=1]
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ret i32 %tmp.1
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}
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define i32 @test2(i32 %a) {
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entry:
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%tmp.1 = and i32 %a, -268435441 ; <i32> [#uses=1]
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ret i32 %tmp.1
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}
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define i32 @test3(i32 %a) {
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entry:
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%tmp.2 = ashr i32 %a, 8 ; <i32> [#uses=1]
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%tmp.3 = and i32 %tmp.2, 255 ; <i32> [#uses=1]
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ret i32 %tmp.3
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}
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define i32 @test4(i32 %a) {
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entry:
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%tmp.3 = lshr i32 %a, 8 ; <i32> [#uses=1]
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%tmp.4 = and i32 %tmp.3, 255 ; <i32> [#uses=1]
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ret i32 %tmp.4
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}
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define i32 @test5(i32 %a) {
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entry:
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%tmp.2 = shl i32 %a, 8 ; <i32> [#uses=1]
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%tmp.3 = and i32 %tmp.2, -8388608 ; <i32> [#uses=1]
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ret i32 %tmp.3
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}
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define i32 @test6(i32 %a) {
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entry:
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%tmp.1 = and i32 %a, 65280 ; <i32> [#uses=1]
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%tmp.2 = ashr i32 %tmp.1, 8 ; <i32> [#uses=1]
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ret i32 %tmp.2
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}
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define i32 @test7(i32 %a) {
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entry:
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%tmp.1 = and i32 %a, 65280 ; <i32> [#uses=1]
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%tmp.2 = lshr i32 %tmp.1, 8 ; <i32> [#uses=1]
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ret i32 %tmp.2
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}
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define i32 @test8(i32 %a) {
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entry:
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%tmp.1 = and i32 %a, 16711680 ; <i32> [#uses=1]
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%tmp.2 = shl i32 %tmp.1, 8 ; <i32> [#uses=1]
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ret i32 %tmp.2
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}
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