mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-10-11 23:25:15 +00:00
a10c01a6c6
Swift cores implement store barriers that are stronger than the ARM specification but weaker than general barriers. They are, in fact, just about enough to provide the ordering needed for atomic operations with release semantics. This patch makes use of that quirk. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185527 91177308-0d34-0410-b5e6-96231b3b80d8
337 lines
9.8 KiB
LLVM
337 lines
9.8 KiB
LLVM
; RUN: llc < %s -mtriple=armv7-apple-ios | FileCheck %s
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; RUN: llc < %s -mtriple=thumbv7-none-linux-gnueabihf | FileCheck %s --check-prefix=CHECK-THUMB
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define i64 @test1(i64* %ptr, i64 %val) {
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; CHECK: test1:
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; CHECK: dmb {{ish$}}
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; CHECK: ldrexd [[REG1:(r[0-9]?[02468])]], [[REG2:(r[0-9]?[13579])]]
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; CHECK: adds [[REG3:(r[0-9]?[02468])]], [[REG1]]
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; CHECK: adc [[REG4:(r[0-9]?[13579])]], [[REG2]]
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; CHECK: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK: cmp
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; CHECK: bne
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; CHECK: dmb {{ish$}}
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; CHECK-THUMB: test1:
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; CHECK-THUMB: dmb {{ish$}}
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; CHECK-THUMB: ldrexd [[REG1:[a-z0-9]+]], [[REG2:[a-z0-9]+]]
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; CHECK-THUMB: adds.w [[REG3:[a-z0-9]+]], [[REG1]]
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; CHECK-THUMB: adc.w [[REG4:[a-z0-9]+]], [[REG2]]
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; CHECK-THUMB: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK-THUMB: cmp
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; CHECK-THUMB: bne
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; CHECK-THUMB: dmb {{ish$}}
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%r = atomicrmw add i64* %ptr, i64 %val seq_cst
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ret i64 %r
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}
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define i64 @test2(i64* %ptr, i64 %val) {
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; CHECK: test2:
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; CHECK: dmb {{ish$}}
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; CHECK: ldrexd [[REG1:(r[0-9]?[02468])]], [[REG2:(r[0-9]?[13579])]]
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; CHECK: subs [[REG3:(r[0-9]?[02468])]], [[REG1]]
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; CHECK: sbc [[REG4:(r[0-9]?[13579])]], [[REG2]]
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; CHECK: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK: cmp
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; CHECK: bne
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; CHECK: dmb {{ish$}}
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; CHECK-THUMB: test2:
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; CHECK-THUMB: dmb {{ish$}}
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; CHECK-THUMB: ldrexd [[REG1:[a-z0-9]+]], [[REG2:[a-z0-9]+]]
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; CHECK-THUMB: subs.w [[REG3:[a-z0-9]+]], [[REG1]]
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; CHECK-THUMB: sbc.w [[REG4:[a-z0-9]+]], [[REG2]]
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; CHECK-THUMB: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK-THUMB: cmp
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; CHECK-THUMB: bne
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; CHECK-THUMB: dmb {{ish$}}
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%r = atomicrmw sub i64* %ptr, i64 %val seq_cst
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ret i64 %r
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}
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define i64 @test3(i64* %ptr, i64 %val) {
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; CHECK: test3:
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; CHECK: dmb {{ish$}}
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; CHECK: ldrexd [[REG1:(r[0-9]?[02468])]], [[REG2:(r[0-9]?[13579])]]
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; CHECK: and [[REG3:(r[0-9]?[02468])]], [[REG1]]
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; CHECK: and [[REG4:(r[0-9]?[13579])]], [[REG2]]
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; CHECK: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK: cmp
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; CHECK: bne
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; CHECK: dmb {{ish$}}
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; CHECK-THUMB: test3:
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; CHECK-THUMB: dmb {{ish$}}
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; CHECK-THUMB: ldrexd [[REG1:[a-z0-9]+]], [[REG2:[a-z0-9]+]]
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; CHECK-THUMB: and.w [[REG3:[a-z0-9]+]], [[REG1]]
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; CHECK-THUMB: and.w [[REG4:[a-z0-9]+]], [[REG2]]
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; CHECK-THUMB: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK-THUMB: cmp
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; CHECK-THUMB: bne
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; CHECK-THUMB: dmb {{ish$}}
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%r = atomicrmw and i64* %ptr, i64 %val seq_cst
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ret i64 %r
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}
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define i64 @test4(i64* %ptr, i64 %val) {
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; CHECK: test4:
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; CHECK: dmb {{ish$}}
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; CHECK: ldrexd [[REG1:(r[0-9]?[02468])]], [[REG2:(r[0-9]?[13579])]]
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; CHECK: orr [[REG3:(r[0-9]?[02468])]], [[REG1]]
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; CHECK: orr [[REG4:(r[0-9]?[13579])]], [[REG2]]
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; CHECK: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK: cmp
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; CHECK: bne
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; CHECK: dmb {{ish$}}
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; CHECK-THUMB: test4:
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; CHECK-THUMB: dmb {{ish$}}
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; CHECK-THUMB: ldrexd [[REG1:[a-z0-9]+]], [[REG2:[a-z0-9]+]]
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; CHECK-THUMB: orr.w [[REG3:[a-z0-9]+]], [[REG1]]
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; CHECK-THUMB: orr.w [[REG4:[a-z0-9]+]], [[REG2]]
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; CHECK-THUMB: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK-THUMB: cmp
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; CHECK-THUMB: bne
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; CHECK-THUMB: dmb {{ish$}}
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%r = atomicrmw or i64* %ptr, i64 %val seq_cst
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ret i64 %r
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}
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define i64 @test5(i64* %ptr, i64 %val) {
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; CHECK: test5:
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; CHECK: dmb {{ish$}}
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; CHECK: ldrexd [[REG1:(r[0-9]?[02468])]], [[REG2:(r[0-9]?[13579])]]
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; CHECK: eor [[REG3:(r[0-9]?[02468])]], [[REG1]]
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; CHECK: eor [[REG4:(r[0-9]?[13579])]], [[REG2]]
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; CHECK: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK: cmp
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; CHECK: bne
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; CHECK: dmb {{ish$}}
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; CHECK-THUMB: test5:
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; CHECK-THUMB: dmb {{ish$}}
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; CHECK-THUMB: ldrexd [[REG1:[a-z0-9]+]], [[REG2:[a-z0-9]+]]
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; CHECK-THUMB: eor.w [[REG3:[a-z0-9]+]], [[REG1]]
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; CHECK-THUMB: eor.w [[REG4:[a-z0-9]+]], [[REG2]]
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; CHECK-THUMB: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK-THUMB: cmp
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; CHECK-THUMB: bne
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; CHECK-THUMB: dmb {{ish$}}
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%r = atomicrmw xor i64* %ptr, i64 %val seq_cst
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ret i64 %r
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}
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define i64 @test6(i64* %ptr, i64 %val) {
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; CHECK: test6:
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; CHECK: dmb {{ish$}}
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; CHECK: ldrexd [[REG1:(r[0-9]?[02468])]], [[REG2:(r[0-9]?[13579])]]
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; CHECK: strexd {{[a-z0-9]+}}, {{r[0-9]?[02468]}}, {{r[0-9]?[13579]}}
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; CHECK: cmp
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; CHECK: bne
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; CHECK: dmb {{ish$}}
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; CHECK-THUMB: test6:
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; CHECK-THUMB: dmb {{ish$}}
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; CHECK-THUMB: ldrexd [[REG1:[a-z0-9]+]], [[REG2:[a-z0-9]+]]
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; CHECK-THUMB: strexd {{[a-z0-9]+}}, {{[a-z0-9]+}}, {{[a-z0-9]+}}
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; CHECK-THUMB: cmp
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; CHECK-THUMB: bne
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; CHECK-THUMB: dmb {{ish$}}
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%r = atomicrmw xchg i64* %ptr, i64 %val seq_cst
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ret i64 %r
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}
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define i64 @test7(i64* %ptr, i64 %val1, i64 %val2) {
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; CHECK: test7:
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; CHECK: dmb {{ish$}}
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; CHECK: ldrexd [[REG1:(r[0-9]?[02468])]], [[REG2:(r[0-9]?[13579])]]
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; CHECK: cmp [[REG1]]
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; CHECK: cmpeq [[REG2]]
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; CHECK: bne
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; CHECK: strexd {{[a-z0-9]+}}, {{r[0-9]?[02468]}}, {{r[0-9]?[13579]}}
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; CHECK: cmp
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; CHECK: bne
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; CHECK: dmb {{ish$}}
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; CHECK-THUMB: test7:
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; CHECK-THUMB: dmb {{ish$}}
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; CHECK-THUMB: ldrexd [[REG1:[a-z0-9]+]], [[REG2:[a-z0-9]+]]
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; CHECK-THUMB: cmp [[REG1]]
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; CHECK-THUMB: it eq
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; CHECK-THUMB: cmpeq [[REG2]]
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; CHECK-THUMB: bne
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; CHECK-THUMB: strexd {{[a-z0-9]+}}, {{[a-z0-9]+}}, {{[a-z0-9]+}}
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; CHECK-THUMB: cmp
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; CHECK-THUMB: bne
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; CHECK-THUMB: dmb {{ish$}}
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%r = cmpxchg i64* %ptr, i64 %val1, i64 %val2 seq_cst
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ret i64 %r
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}
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; Compiles down to cmpxchg
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; FIXME: Should compile to a single ldrexd
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define i64 @test8(i64* %ptr) {
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; CHECK: test8:
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; CHECK: ldrexd [[REG1:(r[0-9]?[02468])]], [[REG2:(r[0-9]?[13579])]]
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; CHECK: cmp [[REG1]]
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; CHECK: cmpeq [[REG2]]
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; CHECK: bne
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; CHECK: strexd {{[a-z0-9]+}}, {{r[0-9]?[02468]}}, {{r[0-9]?[13579]}}
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; CHECK: cmp
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; CHECK: bne
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; CHECK: dmb {{ish$}}
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; CHECK-THUMB: test8:
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; CHECK-THUMB: ldrexd [[REG1:[a-z0-9]+]], [[REG2:[a-z0-9]+]]
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; CHECK-THUMB: cmp [[REG1]]
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; CHECK-THUMB: it eq
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; CHECK-THUMB: cmpeq [[REG2]]
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; CHECK-THUMB: bne
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; CHECK-THUMB: strexd {{[a-z0-9]+}}, {{[a-z0-9]+}}, {{[a-z0-9]+}}
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; CHECK-THUMB: cmp
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; CHECK-THUMB: bne
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; CHECK-THUMB: dmb {{ish$}}
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%r = load atomic i64* %ptr seq_cst, align 8
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ret i64 %r
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}
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; Compiles down to atomicrmw xchg; there really isn't any more efficient
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; way to write it.
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define void @test9(i64* %ptr, i64 %val) {
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; CHECK: test9:
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; CHECK: dmb {{ish$}}
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; CHECK: ldrexd [[REG1:(r[0-9]?[02468])]], [[REG2:(r[0-9]?[13579])]]
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; CHECK: strexd {{[a-z0-9]+}}, {{r[0-9]?[02468]}}, {{r[0-9]?[13579]}}
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; CHECK: cmp
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; CHECK: bne
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; CHECK: dmb {{ish$}}
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; CHECK-THUMB: test9:
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; CHECK-THUMB: dmb {{ish$}}
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; CHECK-THUMB: ldrexd [[REG1:[a-z0-9]+]], [[REG2:[a-z0-9]+]]
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; CHECK-THUMB: strexd {{[a-z0-9]+}}, {{[a-z0-9]+}}, {{[a-z0-9]+}}
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; CHECK-THUMB: cmp
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; CHECK-THUMB: bne
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; CHECK-THUMB: dmb {{ish$}}
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store atomic i64 %val, i64* %ptr seq_cst, align 8
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ret void
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}
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define i64 @test10(i64* %ptr, i64 %val) {
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; CHECK: test10:
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; CHECK: dmb {{ish$}}
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; CHECK: ldrexd [[REG1:(r[0-9]?[02468])]], [[REG2:(r[0-9]?[13579])]]
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; CHECK: subs {{[a-z0-9]+}}, [[REG1]], [[REG3:(r[0-9]?[02468])]]
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; CHECK: sbcs {{[a-z0-9]+}}, [[REG2]], [[REG4:(r[0-9]?[13579])]]
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; CHECK: blt
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; CHECK: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK: cmp
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; CHECK: bne
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; CHECK: dmb {{ish$}}
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; CHECK-THUMB: test10:
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; CHECK-THUMB: dmb {{ish$}}
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; CHECK-THUMB: ldrexd [[REG1:[a-z0-9]+]], [[REG2:[a-z0-9]+]]
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; CHECK-THUMB: subs.w {{[a-z0-9]+}}, [[REG1]], [[REG3:[a-z0-9]+]]
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; CHECK-THUMB: sbcs.w {{[a-z0-9]+}}, [[REG2]], [[REG4:[a-z0-9]+]]
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; CHECK-THUMB: blt
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; CHECK-THUMB: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK-THUMB: cmp
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; CHECK-THUMB: bne
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; CHECK-THUMB: dmb {{ish$}}
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%r = atomicrmw min i64* %ptr, i64 %val seq_cst
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ret i64 %r
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}
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define i64 @test11(i64* %ptr, i64 %val) {
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; CHECK: test11:
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; CHECK: dmb {{ish$}}
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; CHECK: ldrexd [[REG1:(r[0-9]?[02468])]], [[REG2:(r[0-9]?[13579])]]
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; CHECK: subs {{[a-z0-9]+}}, [[REG1]], [[REG3:(r[0-9]?[02468])]]
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; CHECK: sbcs {{[a-z0-9]+}}, [[REG2]], [[REG4:(r[0-9]?[13579])]]
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; CHECK: blo
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; CHECK: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK: cmp
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; CHECK: bne
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; CHECK: dmb {{ish$}}
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; CHECK-THUMB: test11:
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; CHECK-THUMB: dmb {{ish$}}
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; CHECK-THUMB: ldrexd [[REG1:[a-z0-9]+]], [[REG2:[a-z0-9]+]]
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; CHECK-THUMB: subs.w {{[a-z0-9]+}}, [[REG1]], [[REG3:[a-z0-9]+]]
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; CHECK-THUMB: sbcs.w {{[a-z0-9]+}}, [[REG2]], [[REG4:[a-z0-9]+]]
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; CHECK-THUMB: blo
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; CHECK-THUMB: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK-THUMB: cmp
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; CHECK-THUMB: bne
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; CHECK-THUMB: dmb {{ish$}}
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%r = atomicrmw umin i64* %ptr, i64 %val seq_cst
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ret i64 %r
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}
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define i64 @test12(i64* %ptr, i64 %val) {
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; CHECK: test12:
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; CHECK: dmb {{ish$}}
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; CHECK: ldrexd [[REG1:(r[0-9]?[02468])]], [[REG2:(r[0-9]?[13579])]]
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; CHECK: subs {{[a-z0-9]+}}, [[REG1]], [[REG3:(r[0-9]?[02468])]]
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; CHECK: sbcs {{[a-z0-9]+}}, [[REG2]], [[REG4:(r[0-9]?[13579])]]
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; CHECK: bge
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; CHECK: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK: cmp
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; CHECK: bne
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; CHECK: dmb {{ish$}}
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; CHECK-THUMB: test12:
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; CHECK-THUMB: dmb {{ish$}}
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; CHECK-THUMB: ldrexd [[REG1:[a-z0-9]+]], [[REG2:[a-z0-9]+]]
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; CHECK-THUMB: subs.w {{[a-z0-9]+}}, [[REG1]], [[REG3:[a-z0-9]+]]
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; CHECK-THUMB: sbcs.w {{[a-z0-9]+}}, [[REG2]], [[REG4:[a-z0-9]+]]
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; CHECK-THUMB: bge
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; CHECK-THUMB: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK-THUMB: cmp
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; CHECK-THUMB: bne
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; CHECK-THUMB: dmb {{ish$}}
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%r = atomicrmw max i64* %ptr, i64 %val seq_cst
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ret i64 %r
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}
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define i64 @test13(i64* %ptr, i64 %val) {
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; CHECK: test13:
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; CHECK: dmb {{ish$}}
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; CHECK: ldrexd [[REG1:(r[0-9]?[02468])]], [[REG2:(r[0-9]?[13579])]]
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; CHECK: subs {{[a-z0-9]+}}, [[REG1]], [[REG3:(r[0-9]?[02468])]]
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; CHECK: sbcs {{[a-z0-9]+}}, [[REG2]], [[REG4:(r[0-9]?[13579])]]
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; CHECK: bhs
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; CHECK: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK: cmp
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; CHECK: bne
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; CHECK: dmb {{ish$}}
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; CHECK-THUMB: test13:
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; CHECK-THUMB: dmb {{ish$}}
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; CHECK-THUMB: ldrexd [[REG1:[a-z0-9]+]], [[REG2:[a-z0-9]+]]
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; CHECK-THUMB: subs.w {{[a-z0-9]+}}, [[REG1]], [[REG3:[a-z0-9]+]]
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; CHECK-THUMB: sbcs.w {{[a-z0-9]+}}, [[REG2]], [[REG4:[a-z0-9]+]]
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; CHECK-THUMB: bhs
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; CHECK-THUMB: strexd {{[a-z0-9]+}}, [[REG3]], [[REG4]]
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; CHECK-THUMB: cmp
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; CHECK-THUMB: bne
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; CHECK-THUMB: dmb {{ish$}}
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%r = atomicrmw umax i64* %ptr, i64 %val seq_cst
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ret i64 %r
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}
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