XCore handling of thread local lowering

Fix XCoreLowerThreadLocal trying to initialise globals
which have no initializer.

Add handling of const expressions containing thread local variables.
These need to be replaced with instructions, as the thread ID is
used to access the thread local variable.

llvm-svn: 190300

1 files changed, 55 insertions, 16 deletions

diff --git a/llvm/test/CodeGen/XCore/threads.ll b/llvm/test/CodeGen/XCore/threads.ll
index 5840e777618..b56b16b5fa9 100644
--- a/llvm/test/CodeGen/XCore/threads.ll
+++ b/llvm/test/CodeGen/XCore/threads.ll
@@ -13,55 +13,94 @@ declare void @llvm.xcore.initdp.p1i8(i8 addrspace(1)* %r, i8* %value)
 define i8 addrspace(1)* @test_getst(i8 addrspace(1)* %r) {
 ; CHECK-LABEL: test_getst:
 ; CHECK: getst r0, res[r0]
-        %result = call i8 addrspace(1)* @llvm.xcore.getst.p1i8.p1i8(i8 addrspace(1)* %r)
-        ret i8 addrspace(1)* %result
+  %result = call i8 addrspace(1)* @llvm.xcore.getst.p1i8.p1i8(i8 addrspace(1)* %r)
+  ret i8 addrspace(1)* %result
 }
 
 define void @test_ssync() {
 ; CHECK-LABEL: test_ssync:
 ; CHECK: ssync
-	call void @llvm.xcore.ssync()
-	ret void
+  call void @llvm.xcore.ssync()
+  ret void
 }
 
 define void @test_mjoin(i8 addrspace(1)* %r) {
 ; CHECK-LABEL: test_mjoin:
 ; CHECK: mjoin res[r0]
-	call void @llvm.xcore.mjoin.p1i8(i8 addrspace(1)* %r)
-	ret void
+  call void @llvm.xcore.mjoin.p1i8(i8 addrspace(1)* %r)
+  ret void
 }
 
 define void @test_initsp(i8 addrspace(1)* %t, i8* %src) {
 ; CHECK-LABEL: test_initsp:
 ; CHECK: init t[r0]:sp, r1
-        call void @llvm.xcore.initsp.p1i8(i8 addrspace(1)* %t, i8* %src)
-        ret void
+  call void @llvm.xcore.initsp.p1i8(i8 addrspace(1)* %t, i8* %src)
+  ret void
 }
 
 define void @test_initpc(i8 addrspace(1)* %t, i8* %src) {
 ; CHECK-LABEL: test_initpc:
 ; CHECK: init t[r0]:pc, r1
-        call void @llvm.xcore.initpc.p1i8(i8 addrspace(1)* %t, i8* %src)
-        ret void
+  call void @llvm.xcore.initpc.p1i8(i8 addrspace(1)* %t, i8* %src)
+  ret void
 }
 
 define void @test_initlr(i8 addrspace(1)* %t, i8* %src) {
 ; CHECK-LABEL: test_initlr:
 ; CHECK: init t[r0]:lr, r1
-        call void @llvm.xcore.initlr.p1i8(i8 addrspace(1)* %t, i8* %src)
-        ret void
+  call void @llvm.xcore.initlr.p1i8(i8 addrspace(1)* %t, i8* %src)
+  ret void
 }
 
 define void @test_initcp(i8 addrspace(1)* %t, i8* %src) {
 ; CHECK-LABEL: test_initcp:
 ; CHECK: init t[r0]:cp, r1
-        call void @llvm.xcore.initcp.p1i8(i8 addrspace(1)* %t, i8* %src)
-        ret void
+  call void @llvm.xcore.initcp.p1i8(i8 addrspace(1)* %t, i8* %src)
+  ret void
 }
 
 define void @test_initdp(i8 addrspace(1)* %t, i8* %src) {
 ; CHECK-LABEL: test_initdp:
 ; CHECK: init t[r0]:dp, r1
-        call void @llvm.xcore.initdp.p1i8(i8 addrspace(1)* %t, i8* %src)
-        ret void
+  call void @llvm.xcore.initdp.p1i8(i8 addrspace(1)* %t, i8* %src)
+  ret void
 }
+
+@tl = thread_local global [3 x i32] zeroinitializer
+@tle = external thread_local global [2 x i32]
+
+define i32* @f_tl() {
+; CHECK-LABEL: f_tl:
+; CHECK: get r11, id
+; CHECK: ldaw [[R0:r[0-9]]], dp[tl]
+; CHECK: ldc [[R1:r[0-9]]], 8
+; CHECK: ldc [[R2:r[0-9]]], 12
+; r0 = id*12 + 8 + &tl
+; CHECK: lmul {{r[0-9]}}, r0, r11, [[R2]], [[R0]], [[R1]]
+  ret i32* getelementptr inbounds ([3 x i32]* @tl, i32 0, i32 2)
+}
+
+define i32* @f_tle() {
+; CHECK-LABEL: f_tle:
+; CHECK: get r11, id
+; CHECK: shl [[R0:r[0-9]]], r11, 3
+; CHECK: ldaw [[R1:r[0-9]]], dp[tle]
+; r0 = &tl + id*8
+; CHECK: add r0, [[R1]], [[R0]]
+  ret i32* getelementptr inbounds ([2 x i32]* @tle, i32 0, i32 0)
+}
+
+define i32 @f_tlExpr () {
+; CHECK-LABEL: f_tlExpr:
+; CHECK: get r11, id
+; CHECK: shl [[R0:r[0-9]]], r11, 3
+; CHECK: ldaw [[R1:r[0-9]]], dp[tle]
+; CHECK: add [[R2:r[0-9]]], [[R1]], [[R0]]
+; CHECK: add r0, [[R2]], [[R2]]
+  ret i32 add(
+      i32 ptrtoint( i32* getelementptr inbounds ([2 x i32]* @tle, i32 0, i32 0) to i32),
+      i32 ptrtoint( i32* getelementptr inbounds ([2 x i32]* @tle, i32 0, i32 0) to i32))
+}
+
+; CHECK-LABEL: tl:
+; CHECK: .space  96