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llvm-project/llvm/test/CodeGen/ARM/ldstrex-m.ll

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ARM: implement correct atomic operations on v7M ARM v7M has ldrex/strex but not ldrexd/strexd. This means 32-bit operations should work as normal, but 64-bit ones are almost certainly doomed. Patch by Phoebe Buckheister. llvm-svn: 211042
2014-06-17 02:49:36 +08:00
; RUN: llc < %s -mtriple=thumbv7m-none-eabi -mcpu=cortex-m4 | FileCheck %s
[ARM] Add ARMv8-A semaphore/atomic instructions to ARMv8-M Baseline/Mainline llvm-svn: 257882
2016-01-15 18:26:51 +08:00
; RUN: llc < %s -mtriple=thumbv8m.main-none-eabi | FileCheck %s
; RUN: llc < %s -mtriple=thumbv8m.base-none-eabi | FileCheck %s
ARM: implement correct atomic operations on v7M ARM v7M has ldrex/strex but not ldrexd/strexd. This means 32-bit operations should work as normal, but 64-bit ones are almost certainly doomed. Patch by Phoebe Buckheister. llvm-svn: 211042
2014-06-17 02:49:36 +08:00
; CHECK-LABEL: f0:
; CHECK-NOT: ldrexd
define i64 @f0(i64* %p) nounwind readonly {
entry:
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%0 = load atomic i64, i64* %p seq_cst, align 8
ARM: implement correct atomic operations on v7M ARM v7M has ldrex/strex but not ldrexd/strexd. This means 32-bit operations should work as normal, but 64-bit ones are almost certainly doomed. Patch by Phoebe Buckheister. llvm-svn: 211042
2014-06-17 02:49:36 +08:00
ret i64 %0
}
; CHECK-LABEL: f1:
; CHECK-NOT: strexd
define void @f1(i64* %p) nounwind readonly {
entry:
store atomic i64 0, i64* %p seq_cst, align 8
ret void
}
; CHECK-LABEL: f2:
; CHECK-NOT: ldrexd
; CHECK-NOT: strexd
define i64 @f2(i64* %p) nounwind readonly {
entry:
%0 = atomicrmw add i64* %p, i64 1 seq_cst
ret i64 %0
}
; CHECK-LABEL: f3:
; CHECK: ldr
define i32 @f3(i32* %p) nounwind readonly {
entry:
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%0 = load atomic i32, i32* %p seq_cst, align 4
ARM: implement correct atomic operations on v7M ARM v7M has ldrex/strex but not ldrexd/strexd. This means 32-bit operations should work as normal, but 64-bit ones are almost certainly doomed. Patch by Phoebe Buckheister. llvm-svn: 211042
2014-06-17 02:49:36 +08:00
ret i32 %0
}
; CHECK-LABEL: f4:
; CHECK: ldrb
define i8 @f4(i8* %p) nounwind readonly {
entry:
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%0 = load atomic i8, i8* %p seq_cst, align 4
ARM: implement correct atomic operations on v7M ARM v7M has ldrex/strex but not ldrexd/strexd. This means 32-bit operations should work as normal, but 64-bit ones are almost certainly doomed. Patch by Phoebe Buckheister. llvm-svn: 211042
2014-06-17 02:49:36 +08:00
ret i8 %0
}
; CHECK-LABEL: f5:
; CHECK: str
define void @f5(i32* %p) nounwind readonly {
entry:
store atomic i32 0, i32* %p seq_cst, align 4
ret void
}
; CHECK-LABEL: f6:
; CHECK: ldrex
; CHECK: strex
define i32 @f6(i32* %p) nounwind readonly {
entry:
%0 = atomicrmw add i32* %p, i32 1 seq_cst
ret i32 %0
}