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Add an atomic lowering pass

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110113 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Peter Collingbourne
2010-08-03 16:19:16 +00:00
parent 795e70e431
commit 3bababf880
9 changed files with 266 additions and 0 deletions
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40
test/Transforms/LowerAtomic/atomic-load.ll Normal file
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@@ -0,0 +1,40 @@
; RUN: opt < %s -loweratomic -S | FileCheck %s
declare i8 @llvm.atomic.load.add.i8.p0i8(i8* %ptr, i8 %delta)
declare i8 @llvm.atomic.load.nand.i8.p0i8(i8* %ptr, i8 %delta)
declare i8 @llvm.atomic.load.min.i8.p0i8(i8* %ptr, i8 %delta)
define i8 @add() {
; CHECK: @add
%i = alloca i8
%j = call i8 @llvm.atomic.load.add.i8.p0i8(i8* %i, i8 42)
; CHECK: [[INST:%[a-z0-9]+]] = load
; CHECK-NEXT: add
; CHECK-NEXT: store
ret i8 %j
; CHECK: ret i8 [[INST]]
}
define i8 @nand() {
; CHECK: @nand
%i = alloca i8
%j = call i8 @llvm.atomic.load.nand.i8.p0i8(i8* %i, i8 42)
; CHECK: [[INST:%[a-z0-9]+]] = load
; CHECK-NEXT: and
; CHECK-NEXT: xor
; CHECK-NEXT: store
ret i8 %j
; CHECK: ret i8 [[INST]]
}
define i8 @min() {
; CHECK: @min
%i = alloca i8
%j = call i8 @llvm.atomic.load.min.i8.p0i8(i8* %i, i8 42)
; CHECK: [[INST:%[a-z0-9]+]] = load
; CHECK-NEXT: icmp
; CHECK-NEXT: select
; CHECK-NEXT: store
ret i8 %j
; CHECK: ret i8 [[INST]]
}

26
test/Transforms/LowerAtomic/atomic-swap.ll Normal file
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@@ -0,0 +1,26 @@
; RUN: opt < %s -loweratomic -S | FileCheck %s
declare i8 @llvm.atomic.cmp.swap.i8.p0i8(i8* %ptr, i8 %cmp, i8 %val)
declare i8 @llvm.atomic.swap.i8.p0i8(i8* %ptr, i8 %val)
define i8 @cmpswap() {
; CHECK: @cmpswap
%i = alloca i8
%j = call i8 @llvm.atomic.cmp.swap.i8.p0i8(i8* %i, i8 0, i8 42)
; CHECK: [[INST:%[a-z0-9]+]] = load
; CHECK-NEXT: icmp
; CHECK-NEXT: select
; CHECK-NEXT: store
ret i8 %j
; CHECK: ret i8 [[INST]]
}
define i8 @swap() {
; CHECK: @swap
%i = alloca i8
%j = call i8 @llvm.atomic.swap.i8.p0i8(i8* %i, i8 42)
; CHECK: [[INST:%[a-z0-9]+]] = load
; CHECK-NEXT: store
ret i8 %j
; CHECK: ret i8 [[INST]]
}

10
test/Transforms/LowerAtomic/barrier.ll Normal file
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@@ -0,0 +1,10 @@
; RUN: opt < %s -loweratomic -S | FileCheck %s
declare void @llvm.memory.barrier(i1 %ll, i1 %ls, i1 %sl, i1 %ss, i1 %device)
define void @barrier() {
; CHECK: @barrier
call void @llvm.memory.barrier(i1 0, i1 0, i1 0, i1 0, i1 0)
; CHECK-NEXT: ret
ret void
}

3
test/Transforms/LowerAtomic/dg.exp Normal file
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@@ -0,0 +1,3 @@
load_lib llvm.exp
RunLLVMTests [lsort [glob -nocomplain $srcdir/$subdir/*.{ll,c,cpp}]]