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bbc71b8057
Tests updated to explicitly use fast-isel at -O0 instead of implicitly. This change also allows an explicit -fast-isel option to override an implicitly enabled global-isel. Otherwise -fast-isel would have no effect at -O0. Differential Revision: https://reviews.llvm.org/D41362 llvm-svn: 321655
225 lines
6.4 KiB
LLVM
225 lines
6.4 KiB
LLVM
; RUN: llc < %s -mtriple=aarch64-apple-ios | FileCheck %s
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; RUN: llc < %s -mtriple=aarch64-apple-ios -enable-shrink-wrap=true | FileCheck %s
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; Shrink wrapping currently does not kick in because we have a TLS CALL
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; in the entry block and it will clobber the link register.
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; RUN: llc < %s -mtriple=aarch64-apple-ios -O0 -fast-isel | FileCheck --check-prefix=CHECK-O0 %s
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%struct.S = type { i8 }
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@sg = internal thread_local global %struct.S zeroinitializer, align 1
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@__dso_handle = external global i8
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@__tls_guard = internal thread_local unnamed_addr global i1 false
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@sum1 = internal thread_local global i32 0, align 4
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declare %struct.S* @_ZN1SC1Ev(%struct.S* returned)
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declare %struct.S* @_ZN1SD1Ev(%struct.S* returned)
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declare i32 @_tlv_atexit(void (i8*)*, i8*, i8*)
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define cxx_fast_tlscc nonnull %struct.S* @_ZTW2sg() nounwind {
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%.b.i = load i1, i1* @__tls_guard, align 1
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br i1 %.b.i, label %__tls_init.exit, label %init.i
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init.i:
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store i1 true, i1* @__tls_guard, align 1
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%call.i.i = tail call %struct.S* @_ZN1SC1Ev(%struct.S* nonnull @sg)
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%1 = tail call i32 @_tlv_atexit(void (i8*)* nonnull bitcast (%struct.S* (%struct.S*)* @_ZN1SD1Ev to void (i8*)*), i8* nonnull getelementptr inbounds (%struct.S, %struct.S* @sg, i64 0, i32 0), i8* nonnull @__dso_handle)
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br label %__tls_init.exit
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__tls_init.exit:
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ret %struct.S* @sg
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}
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; CHECK-LABEL: _ZTW2sg
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; CHECK-NOT: stp d31, d30
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; CHECK-NOT: stp d29, d28
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; CHECK-NOT: stp d27, d26
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; CHECK-NOT: stp d25, d24
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; CHECK-NOT: stp d23, d22
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; CHECK-NOT: stp d21, d20
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; CHECK-NOT: stp d19, d18
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; CHECK-NOT: stp d17, d16
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; CHECK-NOT: stp d7, d6
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; CHECK-NOT: stp d5, d4
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; CHECK-NOT: stp d3, d2
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; CHECK-NOT: stp d1, d0
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; CHECK-NOT: stp x20, x19
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; FIXME: The splitting logic in the register allocator fails to split along
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; control flow here, we used to get this right by accident before...
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; CHECK-NOTXX: stp x14, x13
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; CHECK-NOT: stp x12, x11
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; CHECK-NOT: stp x10, x9
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; CHECK-NOT: stp x8, x7
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; CHECK-NOT: stp x6, x5
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; CHECK-NOT: stp x4, x3
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; CHECK-NOT: stp x2, x1
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; CHECK: blr
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; CHECK: tbnz w{{.*}}, #0, [[BB_end:.?LBB0_[0-9]+]]
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; CHECK: blr
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; CHECK: tlv_atexit
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; CHECK: [[BB_end]]:
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; CHECK: blr
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; CHECK-NOT: ldp x2, x1
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; CHECK-NOT: ldp x4, x3
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; CHECK-NOT: ldp x6, x5
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; CHECK-NOT: ldp x8, x7
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; CHECK-NOT: ldp x10, x9
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; CHECK-NOT: ldp x12, x11
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; CHECK-NOTXX: ldp x14, x13
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; CHECK-NOT: ldp x20, x19
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; CHECK-NOT: ldp d1, d0
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; CHECK-NOT: ldp d3, d2
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; CHECK-NOT: ldp d5, d4
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; CHECK-NOT: ldp d7, d6
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; CHECK-NOT: ldp d17, d16
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; CHECK-NOT: ldp d19, d18
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; CHECK-NOT: ldp d21, d20
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; CHECK-NOT: ldp d23, d22
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; CHECK-NOT: ldp d25, d24
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; CHECK-NOT: ldp d27, d26
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; CHECK-NOT: ldp d29, d28
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; CHECK-NOT: ldp d31, d30
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; CHECK-O0-LABEL: _ZTW2sg
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; CHECK-O0: stp d31, d30
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; CHECK-O0: stp d29, d28
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; CHECK-O0: stp d27, d26
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; CHECK-O0: stp d25, d24
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; CHECK-O0: stp d23, d22
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; CHECK-O0: stp d21, d20
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; CHECK-O0: stp d19, d18
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; CHECK-O0: stp d17, d16
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; CHECK-O0: stp d7, d6
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; CHECK-O0: stp d5, d4
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; CHECK-O0: stp d3, d2
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; CHECK-O0: stp d1, d0
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; CHECK-O0: stp x14, x13
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; CHECK-O0: stp x12, x11
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; CHECK-O0: stp x10, x9
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; CHECK-O0: stp x8, x7
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; CHECK-O0: stp x6, x5
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; CHECK-O0: stp x4, x3
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; CHECK-O0: stp x2, x1
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; CHECK-O0: blr
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; CHECK-O0: tbnz w{{.*}}, #0, [[BB_end:.?LBB0_[0-9]+]]
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; CHECK-O0: blr
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; CHECK-O0: tlv_atexit
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; CHECK-O0: [[BB_end]]:
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; CHECK-O0: blr
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; CHECK-O0: ldp x2, x1
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; CHECK-O0: ldp x4, x3
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; CHECK-O0: ldp x6, x5
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; CHECK-O0: ldp x8, x7
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; CHECK-O0: ldp x10, x9
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; CHECK-O0: ldp x12, x11
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; CHECK-O0: ldp x14, x13
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; CHECK-O0: ldp d1, d0
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; CHECK-O0: ldp d3, d2
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; CHECK-O0: ldp d5, d4
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; CHECK-O0: ldp d7, d6
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; CHECK-O0: ldp d17, d16
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; CHECK-O0: ldp d19, d18
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; CHECK-O0: ldp d21, d20
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; CHECK-O0: ldp d23, d22
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; CHECK-O0: ldp d25, d24
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; CHECK-O0: ldp d27, d26
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; CHECK-O0: ldp d29, d28
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; CHECK-O0: ldp d31, d30
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; CHECK-LABEL: _ZTW4sum1
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; CHECK-NOT: stp d31, d30
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; CHECK-NOT: stp d29, d28
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; CHECK-NOT: stp d27, d26
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; CHECK-NOT: stp d25, d24
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; CHECK-NOT: stp d23, d22
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; CHECK-NOT: stp d21, d20
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; CHECK-NOT: stp d19, d18
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; CHECK-NOT: stp d17, d16
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; CHECK-NOT: stp d7, d6
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; CHECK-NOT: stp d5, d4
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; CHECK-NOT: stp d3, d2
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; CHECK-NOT: stp d1, d0
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; CHECK-NOT: stp x20, x19
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; CHECK-NOT: stp x14, x13
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; CHECK-NOT: stp x12, x11
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; CHECK-NOT: stp x10, x9
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; CHECK-NOT: stp x8, x7
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; CHECK-NOT: stp x6, x5
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; CHECK-NOT: stp x4, x3
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; CHECK-NOT: stp x2, x1
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; CHECK: blr
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; CHECK-O0-LABEL: _ZTW4sum1
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; CHECK-O0-NOT: vstr
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; CHECK-O0-NOT: vldr
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define cxx_fast_tlscc nonnull i32* @_ZTW4sum1() nounwind {
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ret i32* @sum1
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}
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; Make sure at O0, we don't generate spilling/reloading of the CSRs.
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; CHECK-O0-LABEL: tls_test2
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; CHECK-O0-NOT: stp d31, d30
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; CHECK-O0-NOT: stp d29, d28
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; CHECK-O0-NOT: stp d27, d26
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; CHECK-O0-NOT: stp d25, d24
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; CHECK-O0-NOT: stp d23, d22
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; CHECK-O0-NOT: stp d21, d20
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; CHECK-O0-NOT: stp d19, d18
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; CHECK-O0-NOT: stp d17, d16
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; CHECK-O0-NOT: stp d7, d6
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; CHECK-O0-NOT: stp d5, d4
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; CHECK-O0-NOT: stp d3, d2
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; CHECK-O0-NOT: stp d1, d0
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; CHECK-O0-NOT: stp x20, x19
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; CHECK-O0-NOT: stp x14, x13
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; CHECK-O0-NOT: stp x12, x11
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; CHECK-O0-NOT: stp x10, x9
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; CHECK-O0-NOT: stp x8, x7
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; CHECK-O0-NOT: stp x6, x5
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; CHECK-O0-NOT: stp x4, x3
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; CHECK-O0-NOT: stp x2, x1
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; CHECK-O0: bl {{.*}}tls_helper
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; CHECK-O0-NOT: ldp x2, x1
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; CHECK-O0-NOT: ldp x4, x3
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; CHECK-O0-NOT: ldp x6, x5
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; CHECK-O0-NOT: ldp x8, x7
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; CHECK-O0-NOT: ldp x10, x9
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; CHECK-O0-NOT: ldp x12, x11
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; CHECK-O0-NOT: ldp x14, x13
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; CHECK-O0-NOT: ldp x20, x19
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; CHECK-O0-NOT: ldp d1, d0
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; CHECK-O0-NOT: ldp d3, d2
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; CHECK-O0-NOT: ldp d5, d4
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; CHECK-O0-NOT: ldp d7, d6
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; CHECK-O0-NOT: ldp d17, d16
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; CHECK-O0-NOT: ldp d19, d18
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; CHECK-O0-NOT: ldp d21, d20
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; CHECK-O0-NOT: ldp d23, d22
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; CHECK-O0-NOT: ldp d25, d24
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; CHECK-O0-NOT: ldp d27, d26
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; CHECK-O0-NOT: ldp d29, d28
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; CHECK-O0-NOT: ldp d31, d30
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; CHECK-O0: ret
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%class.C = type { i32 }
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@tC = internal thread_local global %class.C zeroinitializer, align 4
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declare cxx_fast_tlscc void @tls_helper()
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define cxx_fast_tlscc %class.C* @tls_test2() #1 {
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call cxx_fast_tlscc void @tls_helper()
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ret %class.C* @tC
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}
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; Make sure we do not allow tail call when caller and callee have different
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; calling conventions.
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declare %class.C* @_ZN1CD1Ev(%class.C* readnone returned %this)
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; CHECK-LABEL: tls_test
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; CHECK: bl __tlv_atexit
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define cxx_fast_tlscc void @__tls_test() {
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entry:
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store i32 0, i32* getelementptr inbounds (%class.C, %class.C* @tC, i64 0, i32 0), align 4
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%0 = tail call i32 @_tlv_atexit(void (i8*)* bitcast (%class.C* (%class.C*)* @_ZN1CD1Ev to void (i8*)*), i8* bitcast (%class.C* @tC to i8*), i8* nonnull @__dso_handle) #1
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ret void
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}
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attributes #0 = { nounwind "no-frame-pointer-elim"="true" }
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attributes #1 = { nounwind }
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