78 lines
2.6 KiB
LLVM
78 lines
2.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple arm64-none-eabi -o - %s | FileCheck %s --check-prefixes=CHECK,SDISEL
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; RUN: llc -mtriple arm64-none-eabi -global-isel -o - %s | FileCheck %s --check-prefixes=CHECK,GISEL
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@out = internal global i32 0, align 4
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; Ensure that we transform select(C0, x, select(C1, x, y)) towards
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; select(C0 | C1, x, y) so we can use CMP;CCMP for the implementation.
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define i32 @test0(i32 %v0, i32 %v1, i32 %v2) {
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; SDISEL-LABEL: test0:
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; SDISEL: // %bb.0:
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; SDISEL-NEXT: cmp w0, #7
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; SDISEL-NEXT: ccmp w1, #0, #0, ne
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; SDISEL-NEXT: csel w0, w1, w2, gt
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; SDISEL-NEXT: ret
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;
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; GISEL-LABEL: test0:
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; GISEL: // %bb.0:
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; GISEL-NEXT: cmp w0, #7
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; GISEL-NEXT: csel w8, w1, w2, eq
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; GISEL-NEXT: cmp w1, #0
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; GISEL-NEXT: csel w0, w1, w8, gt
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; GISEL-NEXT: ret
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%cmp1 = icmp eq i32 %v0, 7
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%cmp2 = icmp sgt i32 %v1, 0
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%sel0 = select i1 %cmp1, i32 %v1, i32 %v2
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%sel1 = select i1 %cmp2, i32 %v1, i32 %sel0
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ret i32 %sel1
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}
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; Usually we keep select(C0 | C1, x, y) as is on aarch64 to create CMP;CCMP
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; sequences. This case should be transformed to select(C0, select(C1, x, y), y)
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; anyway to get CSE effects.
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define void @test1(i32 %bitset, i32 %val0, i32 %val1) {
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; SDISEL-LABEL: test1:
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; SDISEL: // %bb.0:
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; SDISEL-NEXT: cmp w0, #7
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; SDISEL-NEXT: adrp x8, out
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; SDISEL-NEXT: csel w9, w1, w2, eq
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; SDISEL-NEXT: cmp w9, #13
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; SDISEL-NEXT: csel w9, w1, w2, lo
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; SDISEL-NEXT: cmp w0, #42
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; SDISEL-NEXT: csel w10, w1, w9, eq
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; SDISEL-NEXT: str w9, [x8, :lo12:out]
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; SDISEL-NEXT: str w10, [x8, :lo12:out]
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; SDISEL-NEXT: ret
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;
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; GISEL-LABEL: test1:
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; GISEL: // %bb.0:
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; GISEL-NEXT: cmp w0, #7
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; GISEL-NEXT: csel w8, w1, w2, eq
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; GISEL-NEXT: cmp w8, #13
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; GISEL-NEXT: cset w8, lo
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; GISEL-NEXT: tst w8, #0x1
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; GISEL-NEXT: csel w9, w1, w2, ne
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; GISEL-NEXT: cmp w0, #42
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; GISEL-NEXT: cset w10, eq
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; GISEL-NEXT: orr w8, w10, w8
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; GISEL-NEXT: tst w8, #0x1
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; GISEL-NEXT: adrp x8, out
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; GISEL-NEXT: csel w10, w1, w2, ne
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; GISEL-NEXT: str w9, [x8, :lo12:out]
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; GISEL-NEXT: str w10, [x8, :lo12:out]
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; GISEL-NEXT: ret
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%cmp1 = icmp eq i32 %bitset, 7
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%cond = select i1 %cmp1, i32 %val0, i32 %val1
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%cmp5 = icmp ult i32 %cond, 13
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%cond11 = select i1 %cmp5, i32 %val0, i32 %val1
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%cmp3 = icmp eq i32 %bitset, 42
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%or.cond = or i1 %cmp3, %cmp5
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%cond17 = select i1 %or.cond, i32 %val0, i32 %val1
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store volatile i32 %cond11, i32* @out, align 4
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store volatile i32 %cond17, i32* @out, align 4
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ret void
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}
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;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
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; CHECK: {{.*}}
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