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[NFC][x86][AArch64] extract-bits.ll: add test with 'ashr'. 

llvm-svn: 346121
This commit is contained in:
Roman Lebedev 2018-11-05 09:20:08 +00:00
parent 342ca71145
commit 7db25f2b38
2 changed files with 581 additions and 336 deletions
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32
llvm/test/CodeGen/AArch64/extract-bits.ll
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@ -34,6 +34,22 @@ define i32 @bextr32_a0(i32 %val, i32 %numskipbits, i32 %numlowbits) nounwind {
ret i32 %masked
}
define i32 @bextr32_a0_arithmetic(i32 %val, i32 %numskipbits, i32 %numlowbits) nounwind {
; CHECK-LABEL: bextr32_a0_arithmetic:
; CHECK: // %bb.0:
; CHECK-NEXT: orr w9, wzr, #0x1
; CHECK-NEXT: lsl w9, w9, w2
; CHECK-NEXT: asr w8, w0, w1
; CHECK-NEXT: sub w9, w9, #1 // =1
; CHECK-NEXT: and w0, w9, w8
; CHECK-NEXT: ret
%shifted = ashr i32 %val, %numskipbits
%onebit = shl i32 1, %numlowbits
%mask = add nsw i32 %onebit, -1
%masked = and i32 %mask, %shifted
ret i32 %masked
}
define i32 @bextr32_a1_indexzext(i32 %val, i8 zeroext %numskipbits, i8 zeroext %numlowbits) nounwind {
; CHECK-LABEL: bextr32_a1_indexzext:
; CHECK: // %bb.0:
@ -124,6 +140,22 @@ define i64 @bextr64_a0(i64 %val, i64 %numskipbits, i64 %numlowbits) nounwind {
ret i64 %masked
}
define i64 @bextr64_a0_arithmetic(i64 %val, i64 %numskipbits, i64 %numlowbits) nounwind {
; CHECK-LABEL: bextr64_a0_arithmetic:
; CHECK: // %bb.0:
; CHECK-NEXT: orr w9, wzr, #0x1
; CHECK-NEXT: lsl x9, x9, x2
; CHECK-NEXT: asr x8, x0, x1
; CHECK-NEXT: sub x9, x9, #1 // =1
; CHECK-NEXT: and x0, x9, x8
; CHECK-NEXT: ret
%shifted = ashr i64 %val, %numskipbits
%onebit = shl i64 1, %numlowbits
%mask = add nsw i64 %onebit, -1
%masked = and i64 %mask, %shifted
ret i64 %masked
}
define i64 @bextr64_a1_indexzext(i64 %val, i8 zeroext %numskipbits, i8 zeroext %numlowbits) nounwind {
; CHECK-LABEL: bextr64_a1_indexzext:
; CHECK: // %bb.0:

885
llvm/test/CodeGen/X86/extract-bits.ll
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