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https://github.com/c64scene-ar/llvm-6502.git
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bf188aeae7
the bits being cleared by the AND are not demanded by the BFI. The previous BFI dag combine rule was actually incorrect (or used to be correct until BFI representation changed). rdar://9609030 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133034 91177308-0d34-0410-b5e6-96231b3b80d8
77 lines
1.9 KiB
LLVM
77 lines
1.9 KiB
LLVM
; RUN: llc -march=arm -mattr=+v6t2 < %s | FileCheck %s
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%struct.F = type { [3 x i8], i8 }
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@X = common global %struct.F zeroinitializer, align 4 ; <%struct.F*> [#uses=1]
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define void @f1([1 x i32] %f.coerce0) nounwind {
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entry:
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; CHECK: f1
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; CHECK: mov r2, #10
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; CHECK: bfi r1, r2, #22, #4
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%0 = load i32* bitcast (%struct.F* @X to i32*), align 4 ; <i32> [#uses=1]
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%1 = and i32 %0, -62914561 ; <i32> [#uses=1]
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%2 = or i32 %1, 41943040 ; <i32> [#uses=1]
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store i32 %2, i32* bitcast (%struct.F* @X to i32*), align 4
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ret void
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}
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define i32 @f2(i32 %A, i32 %B) nounwind {
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entry:
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; CHECK: f2
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; CHECK: lsr{{.*}}#7
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; CHECK: bfi r0, r1, #7, #16
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%and = and i32 %A, -8388481 ; <i32> [#uses=1]
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%and2 = and i32 %B, 8388480 ; <i32> [#uses=1]
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%or = or i32 %and2, %and ; <i32> [#uses=1]
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ret i32 %or
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}
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define i32 @f3(i32 %A, i32 %B) nounwind {
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entry:
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; CHECK: f3
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; CHECK: lsr{{.*}} #7
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; CHECK: bfi {{.*}}, #7, #16
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%and = and i32 %A, 8388480 ; <i32> [#uses=1]
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%and2 = and i32 %B, -8388481 ; <i32> [#uses=1]
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%or = or i32 %and2, %and ; <i32> [#uses=1]
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ret i32 %or
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}
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; rdar://8752056
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define i32 @f4(i32 %a) nounwind {
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; CHECK: f4
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; CHECK: movw [[R1:r[0-9]+]], #3137
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; CHECK: bfi [[R1]], {{r[0-9]+}}, #15, #5
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%1 = shl i32 %a, 15
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%ins7 = and i32 %1, 1015808
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%ins12 = or i32 %ins7, 3137
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ret i32 %ins12
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}
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; rdar://8458663
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define i32 @f5(i32 %a, i32 %b) nounwind {
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entry:
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; CHECK: f5:
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; CHECK-NOT: bfc
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; CHECK: bfi r0, r1, #20, #4
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%0 = and i32 %a, -15728641
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%1 = shl i32 %b, 20
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%2 = and i32 %1, 15728640
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%3 = or i32 %2, %0
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ret i32 %3
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}
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; rdar://9609030
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define i32 @f6(i32 %a, i32 %b) nounwind readnone {
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entry:
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; CHECK: f6:
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; CHECK-NOT: bic
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; CHECK: bfi r0, r1, #8, #9
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%and = and i32 %a, -130817
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%and2 = shl i32 %b, 8
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%shl = and i32 %and2, 130816
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%or = or i32 %shl, %and
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ret i32 %or
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}
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