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|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mcpu cortex-a53 -mtriple=aarch64 | FileCheck %s --check-prefix=A53
; PR26827 - Merge stores causes wrong dependency.
%struct1 = type { ptr, ptr, i32, i32, i16, i16, ptr, ptr }
@gv0 = internal unnamed_addr global i32 0, align 4
@gv1 = internal unnamed_addr global ptr null, align 8
define void @test(ptr %fde, i32 %fd, ptr %func, ptr %arg) uwtable {
;CHECK-LABEL: test
; A53-LABEL: test:
; A53: // %bb.0: // %entry
; A53-NEXT: stp x30, x19, [sp, #-16]! // 16-byte Folded Spill
; A53-NEXT: .cfi_def_cfa_offset 16
; A53-NEXT: .cfi_offset w19, -8
; A53-NEXT: .cfi_offset w30, -16
; A53-NEXT: .cfi_remember_state
; A53-NEXT: movi v0.2d, #0000000000000000
; A53-NEXT: mov x8, x0
; A53-NEXT: mov x19, x8
; A53-NEXT: mov w0, w1
; A53-NEXT: mov w9, #256
; A53-NEXT: stp x2, x3, [x8, #32]
; A53-NEXT: mov x2, x8
; A53-NEXT: str q0, [x19, #16]!
; A53-NEXT: str w1, [x19]
; A53-NEXT: mov w1, #4
; A53-NEXT: str q0, [x8]
; A53-NEXT: strh w9, [x8, #24]
; A53-NEXT: str wzr, [x8, #20]
; A53-NEXT: bl fcntl
; A53-NEXT: adrp x9, gv0
; A53-NEXT: add x9, x9, :lo12:gv0
; A53-NEXT: cmp x19, x9
; A53-NEXT: b.eq .LBB0_4
; A53-NEXT: // %bb.1:
; A53-NEXT: ldr w8, [x19]
; A53-NEXT: ldr w9, [x9]
; A53-NEXT: .p2align 4, , 8
; A53-NEXT: .LBB0_2: // %while.body.i.split.ver.us
; A53-NEXT: // =>This Inner Loop Header: Depth=1
; A53-NEXT: lsl w9, w9, #1
; A53-NEXT: cmp w9, w8
; A53-NEXT: b.le .LBB0_2
; A53-NEXT: // %bb.3: // %while.end.i
; A53-NEXT: bl foo
; A53-NEXT: adrp x8, gv1
; A53-NEXT: str x0, [x8, :lo12:gv1]
; A53-NEXT: ldp x30, x19, [sp], #16 // 16-byte Folded Reload
; A53-NEXT: .cfi_def_cfa_offset 0
; A53-NEXT: .cfi_restore w19
; A53-NEXT: .cfi_restore w30
; A53-NEXT: ret
; A53-NEXT: .p2align 4, , 8
; A53-NEXT: .LBB0_4: // %while.body.i.split
; A53-NEXT: // =>This Inner Loop Header: Depth=1
; A53-NEXT: .cfi_restore_state
; A53-NEXT: b .LBB0_4
entry:
tail call void @llvm.memset.p0.i64(ptr align 8 %fde, i8 0, i64 40, i1 false)
%state = getelementptr inbounds %struct1, ptr %fde, i64 0, i32 4
store i16 256, ptr %state, align 8
%fd1 = getelementptr inbounds %struct1, ptr %fde, i64 0, i32 2
store i32 %fd, ptr %fd1, align 8
%force_eof = getelementptr inbounds %struct1, ptr %fde, i64 0, i32 3
store i32 0, ptr %force_eof, align 4
%func2 = getelementptr inbounds %struct1, ptr %fde, i64 0, i32 6
store ptr %func, ptr %func2, align 8
%arg3 = getelementptr inbounds %struct1, ptr %fde, i64 0, i32 7
store ptr %arg, ptr %arg3, align 8
%call = tail call i32 (i32, i32, ...) @fcntl(i32 %fd, i32 4, ptr %fde) #6
%0 = load i32, ptr %fd1, align 8
%cmp.i = icmp slt i32 %0, 0
br i1 %cmp.i, label %if.then.i, label %while.body.i.preheader
if.then.i:
unreachable
while.body.i.preheader:
%1 = load i32, ptr @gv0, align 4
%2 = icmp eq ptr %fd1, @gv0
br i1 %2, label %while.body.i.split, label %while.body.i.split.ver.us.preheader
while.body.i.split.ver.us.preheader:
br label %while.body.i.split.ver.us
while.body.i.split.ver.us:
%.reg2mem21.0 = phi i32 [ %mul.i.ver.us, %while.body.i.split.ver.us ], [ %1, %while.body.i.split.ver.us.preheader ]
%mul.i.ver.us = shl nsw i32 %.reg2mem21.0, 1
%3 = icmp sgt i32 %mul.i.ver.us, %0
br i1 %3, label %while.end.i, label %while.body.i.split.ver.us
while.body.i.split:
br label %while.body.i.split
while.end.i:
%call.i = tail call ptr @foo()
store ptr %call.i, ptr @gv1, align 8
br label %exit
exit:
ret void
}
; TODO: rev16?
define void @rotate16_in_place(ptr %p) {
; A53-LABEL: rotate16_in_place:
; A53: // %bb.0:
; A53-NEXT: ldrb w8, [x0, #1]
; A53-NEXT: ldrb w9, [x0]
; A53-NEXT: strb w8, [x0]
; A53-NEXT: strb w9, [x0, #1]
; A53-NEXT: ret
%p1 = getelementptr i8, ptr %p, i64 1
%i0 = load i8, ptr %p, align 1
%i1 = load i8, ptr %p1, align 1
store i8 %i1, ptr %p, align 1
store i8 %i0, ptr %p1, align 1
ret void
}
; TODO: rev16?
define void @rotate16(ptr %p, ptr %q) {
; A53-LABEL: rotate16:
; A53: // %bb.0:
; A53-NEXT: ldrb w8, [x0, #1]
; A53-NEXT: ldrb w9, [x0]
; A53-NEXT: strb w8, [x1]
; A53-NEXT: strb w9, [x1, #1]
; A53-NEXT: ret
%p1 = getelementptr i8, ptr %p, i64 1
%q1 = getelementptr i8, ptr %q, i64 1
%i0 = load i8, ptr %p, align 1
%i1 = load i8, ptr %p1, align 1
store i8 %i1, ptr %q, align 1
store i8 %i0, ptr %q1, align 1
ret void
}
define void @rotate32_in_place(ptr %p) {
; A53-LABEL: rotate32_in_place:
; A53: // %bb.0:
; A53-NEXT: ldr w8, [x0]
; A53-NEXT: ror w8, w8, #16
; A53-NEXT: str w8, [x0]
; A53-NEXT: ret
%p1 = getelementptr i16, ptr %p, i64 1
%i0 = load i16, ptr %p, align 2
%i1 = load i16, ptr %p1, align 2
store i16 %i1, ptr %p, align 2
store i16 %i0, ptr %p1, align 2
ret void
}
define void @rotate32(ptr %p) {
; A53-LABEL: rotate32:
; A53: // %bb.0:
; A53-NEXT: ldr w8, [x0]
; A53-NEXT: ror w8, w8, #16
; A53-NEXT: str w8, [x0, #84]
; A53-NEXT: ret
%p1 = getelementptr i16, ptr %p, i64 1
%p42 = getelementptr i16, ptr %p, i64 42
%p43 = getelementptr i16, ptr %p, i64 43
%i0 = load i16, ptr %p, align 2
%i1 = load i16, ptr %p1, align 2
store i16 %i1, ptr %p42, align 2
store i16 %i0, ptr %p43, align 2
ret void
}
; Prefer paired memops over rotate.
define void @rotate64_in_place(ptr %p) {
; A53-LABEL: rotate64_in_place:
; A53: // %bb.0:
; A53-NEXT: ldp w9, w8, [x0]
; A53-NEXT: stp w8, w9, [x0]
; A53-NEXT: ret
%p1 = getelementptr i32, ptr %p, i64 1
%i0 = load i32, ptr %p, align 4
%i1 = load i32, ptr %p1, align 4
store i32 %i1, ptr %p, align 4
store i32 %i0, ptr %p1, align 4
ret void
}
; Prefer paired memops over rotate.
define void @rotate64(ptr %p) {
; A53-LABEL: rotate64:
; A53: // %bb.0:
; A53-NEXT: ldp w9, w8, [x0]
; A53-NEXT: stp w8, w9, [x0, #8]
; A53-NEXT: ret
%p1 = getelementptr i32, ptr %p, i64 1
%p2 = getelementptr i32, ptr %p, i64 2
%p3 = getelementptr i32, ptr %p, i64 3
%i0 = load i32, ptr %p, align 4
%i1 = load i32, ptr %p1, align 4
store i32 %i1, ptr %p2, align 4
store i32 %i0, ptr %p3, align 4
ret void
}
declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1)
declare i32 @fcntl(i32, i32, ...)
declare noalias ptr @foo()
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