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https://github.com/RPCS3/llvm-mirror.git
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d0dd6e5750
This patch adds Hardware Transaction Memory (HTM) support supported by ISA 2.07 (POWER8). The intrinsic support is based on GCC one [1], but currently only the 'PowerPC HTM Low Level Built-in Function' are implemented. The HTM instructions follows the RC ones and the transaction initiation result is set on RC0 (with exception of tcheck). Currently approach is to create a register copy from CR0 to GPR and comapring. Although this is suboptimal, since the branch could be taken directly by comparing the CR0 value, it generates code correctly on both test and branch and just return value. A possible future optimization could be elimitate the MFCR instruction to branch directly. The HTM usage requires a recently newer kernel with PPC HTM enabled. Tested on powerpc64 and powerpc64le. This is send along a clang patch to enabled the builtins and option switch. [1] https://gcc.gnu.org/onlinedocs/gcc/PowerPC-Hardware-Transactional-Memory-Built-in-Functions.html Phabricator Review: http://reviews.llvm.org/D8247 llvm-svn: 233204
126 lines
3.0 KiB
LLVM
126 lines
3.0 KiB
LLVM
; RUN: llc -mcpu=pwr8 -mattr=+htm < %s | FileCheck %s
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target datalayout = "E-m:e-i64:64-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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define zeroext i32 @test1() {
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entry:
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%0 = tail call i32 @llvm.ppc.tbegin(i32 0)
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ret i32 %0
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; CHECK-LABEL: @test1
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; CHECK: tbegin. 0
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; CHECK: mfocrf [[REGISTER1:[0-9]+]], 128
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; CHECK: rlwinm [[REGISTER2:[0-9]+]], [[REGISTER1]], 3, 31, 31
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; CHECK: xori {{[0-9]+}}, [[REGISTER2]], 1
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}
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declare i32 @llvm.ppc.tbegin(i32) #1
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define zeroext i32 @test2() {
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entry:
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%0 = tail call i32 @llvm.ppc.tend(i32 0)
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ret i32 %0
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; CHECK-LABEL: @test2
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; CHECK: tend. 0
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; CHECK: mfocrf {{[0-9]+}}, 128
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}
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declare i32 @llvm.ppc.tend(i32)
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define void @test3() {
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entry:
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%0 = tail call i32 @llvm.ppc.tabort(i32 0)
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%1 = tail call i32 @llvm.ppc.tabortdc(i32 0, i32 1, i32 2)
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%2 = tail call i32 @llvm.ppc.tabortdci(i32 0, i32 1, i32 2)
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%3 = tail call i32 @llvm.ppc.tabortwc(i32 0, i32 1, i32 2)
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%4 = tail call i32 @llvm.ppc.tabortwci(i32 0, i32 1, i32 2)
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ret void
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; CHECK-LABEL: @test3
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; CHECK: tabort. {{[0-9]+}}
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; CHECK: tabortdc. 0, {{[0-9]+}}, {{[0-9]+}}
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; CHECK: tabortdci. 0, {{[0-9]+}}, 2
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; CHECK: tabortwc. 0, {{[0-9]+}}, {{[0-9]+}}
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; CHECK: tabortwci. 0, {{[0-9]+}}, 2
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}
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declare i32 @llvm.ppc.tabort(i32)
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declare i32 @llvm.ppc.tabortdc(i32, i32, i32)
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declare i32 @llvm.ppc.tabortdci(i32, i32, i32)
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declare i32 @llvm.ppc.tabortwc(i32, i32, i32)
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declare i32 @llvm.ppc.tabortwci(i32, i32, i32)
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define void @test4() {
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entry:
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%0 = tail call i32 @llvm.ppc.tendall()
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%1 = tail call i32 @llvm.ppc.tresume()
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%2 = tail call i32 @llvm.ppc.tsuspend()
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ret void
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; CHECK-LABEL: @test4
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; CHECK: tend. 1
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; CHECK: tsr. 1
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; CHECK: tsr. 0
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}
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declare i32 @llvm.ppc.tendall()
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declare i32 @llvm.ppc.tresume()
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declare i32 @llvm.ppc.tsuspend()
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define void @test5(i64 %v) {
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entry:
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tail call void @llvm.ppc.set.texasr(i64 %v)
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tail call void @llvm.ppc.set.texasru(i64 %v)
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tail call void @llvm.ppc.set.tfhar(i64 %v)
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tail call void @llvm.ppc.set.tfiar(i64 %v)
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ret void
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; CHECK-LABEL: @test5
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; CHECK: mtspr 130, [[REG1:[0-9]+]]
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; CHECK: mtspr 131, [[REG2:[0-9]+]]
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; CHECK: mtspr 128, [[REG3:[0-9]+]]
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; CHECK: mtspr 129, [[REG4:[0-9]+]]
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}
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define i64 @test6() {
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entry:
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%0 = tail call i64 @llvm.ppc.get.texasr()
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ret i64 %0
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; CHECK-LABEL: @test6
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; CHECK: mfspr [[REG1:[0-9]+]], 130
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}
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define i64 @test7() {
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entry:
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%0 = tail call i64 @llvm.ppc.get.texasru()
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ret i64 %0
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; CHECK-LABEL: @test7
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; CHECK: mfspr [[REG1:[0-9]+]], 131
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}
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define i64 @test8() {
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entry:
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%0 = tail call i64 @llvm.ppc.get.tfhar()
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ret i64 %0
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; CHECK-LABEL: @test8
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; CHECK: mfspr [[REG1:[0-9]+]], 128
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}
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define i64 @test9() {
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entry:
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%0 = tail call i64 @llvm.ppc.get.tfiar()
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ret i64 %0
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; CHECK-LABEL: @test9
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; CHECK: mfspr [[REG1:[0-9]+]], 129
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}
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declare void @llvm.ppc.set.texasr(i64)
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declare void @llvm.ppc.set.texasru(i64)
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declare void @llvm.ppc.set.tfhar(i64)
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declare void @llvm.ppc.set.tfiar(i64)
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declare i64 @llvm.ppc.get.texasr()
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declare i64 @llvm.ppc.get.texasru()
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declare i64 @llvm.ppc.get.tfhar()
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declare i64 @llvm.ppc.get.tfiar()
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