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https://github.com/c64scene-ar/llvm-6502.git
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8775a51d94
Now that it's in place, it seems silly not to let ARM make use of the extra tail call opportunities. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187795 91177308-0d34-0410-b5e6-96231b3b80d8
112 lines
3.2 KiB
LLVM
112 lines
3.2 KiB
LLVM
; RUN: llc < %s -mtriple=armv7 -arm-tail-calls | FileCheck %s
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declare i16 @ret16(i16 returned)
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declare i32 @ret32(i32 returned)
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define i32 @test1(i32 %val) {
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; CHECK-LABEL: test1:
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; CHECK: bl {{_?}}ret16
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%in = trunc i32 %val to i16
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tail call i16 @ret16(i16 returned %in)
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ret i32 %val
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}
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define i16 @test2(i32 %val) {
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; CHECK-LABEL: test2:
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; CHECK: b {{_?}}ret16
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%in = trunc i32 %val to i16
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tail call i16 @ret16(i16 returned %in)
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ret i16 %in
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}
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declare {i32, i8} @take_i32_i8({i32, i8} returned)
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define { i8, i8 } @test_nocommon_value({i32, i32} %in) {
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; CHECK-LABEL: test_nocommon_value:
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; CHECK: b {{_?}}take_i32_i8
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%first = extractvalue {i32, i32} %in, 0
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%first.trunc = trunc i32 %first to i8
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%second = extractvalue {i32, i32} %in, 1
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%second.trunc = trunc i32 %second to i8
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%tmp = insertvalue {i32, i8} undef, i32 %first, 0
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%callval = insertvalue {i32, i8} %tmp, i8 %second.trunc, 1
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tail call {i32, i8} @take_i32_i8({i32, i8} returned %callval)
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%restmp = insertvalue {i8, i8} undef, i8 %first.trunc, 0
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%res = insertvalue {i8, i8} %restmp, i8 %second.trunc, 1
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ret {i8, i8} %res
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}
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declare {i32, {i32, i32}} @give_i32_i32_i32()
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define {{i32, i32}, i32} @test_structs_different_shape() {
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; CHECK-LABEL: test_structs_different_shape:
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; CHECK: b {{_?}}give_i32_i32_i32
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%val = tail call {i32, {i32, i32}} @give_i32_i32_i32()
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%first = extractvalue {i32, {i32, i32}} %val, 0
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%second = extractvalue {i32, {i32, i32}} %val, 1, 0
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%third = extractvalue {i32, {i32, i32}} %val, 1, 1
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%restmp = insertvalue {{i32, i32}, i32} undef, i32 %first, 0, 0
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%reseventmper = insertvalue {{i32, i32}, i32} %restmp, i32 %second, 0, 1
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%res = insertvalue {{i32, i32}, i32} %reseventmper, i32 %third, 1
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ret {{i32, i32}, i32} %res
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}
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define i32 @test_undef_asymmetry() {
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; CHECK: test_undef_asymmetry:
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; CHECK: bl {{_?}}ret32
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; CHECK-NOT: jmp
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tail call i32 @ret32(i32 returned undef)
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ret i32 2
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}
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define {{}, {{}, i32, {}}, [1 x i32]} @evil_empty_aggregates() {
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; CHECK-LABEL: evil_empty_aggregates:
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; CHECK: b {{_?}}give_i32_i32_i32
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%agg = tail call {i32, {i32, i32}} @give_i32_i32_i32()
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%first = extractvalue {i32, {i32, i32}} %agg, 0
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%second = extractvalue {i32, {i32, i32}} %agg, 1, 0
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%restmp = insertvalue {{}, {{}, i32, {}}, [1 x i32]} undef, i32 %first, 1, 1
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%res = insertvalue {{}, {{}, i32, {}}, [1 x i32]} %restmp, i32 %second, 2, 0
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ret {{}, {{}, i32, {}}, [1 x i32]} %res
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}
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define i32 @structure_is_unimportant() {
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; CHECK-LABEL: structure_is_unimportant:
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; CHECK: b {{_?}}give_i32_i32_i32
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%val = tail call {i32, {i32, i32}} @give_i32_i32_i32()
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%res = extractvalue {i32, {i32, i32}} %val, 0
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ret i32 %res
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}
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declare i64 @give_i64()
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define i64 @direct_i64_ok() {
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; CHECK-LABEL: direct_i64_ok:
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; CHECK: b {{_?}}give_i64
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%val = tail call i64 @give_i64()
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ret i64 %val
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}
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declare {i64, i32} @give_i64_i32()
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define {i32, i32} @trunc_i64_not_ok() {
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; CHECK-LABEL: trunc_i64_not_ok:
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; CHECK: bl {{_?}}give_i64_i32
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%agg = tail call {i64, i32} @give_i64_i32()
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%first = extractvalue {i64, i32} %agg, 0
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%second = extractvalue {i64, i32} %agg, 1
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%first.trunc = trunc i64 %first to i32
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%tmp = insertvalue {i32, i32} undef, i32 %first.trunc, 0
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%ret = insertvalue {i32, i32} %tmp, i32 %second, 1
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ret {i32, i32} %ret
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}
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