Rebased PNaCl localmods in LLVM to 223109

test/Transforms/NaCl/expand-tls-constexpr.ll

+; RUN: opt < %s -nacl-expand-tls-constant-expr -S | FileCheck %s
+
+@tvar = thread_local global i32 0
+
+
+define i32 @test_converting_ptrtoint() {
+  ret i32 ptrtoint (i32* @tvar to i32)
+}
+; CHECK: define i32 @test_converting_ptrtoint()
+; CHECK: %expanded = ptrtoint i32* @tvar to i32
+; CHECK: ret i32 %expanded
+
+
+define i32 @test_converting_add() {
+  ret i32 add (i32 ptrtoint (i32* @tvar to i32), i32 4)
+}
+; CHECK: define i32 @test_converting_add()
+; CHECK: %expanded1 = ptrtoint i32* @tvar to i32
+; CHECK: %expanded = add i32 %expanded1, 4
+; CHECK: ret i32 %expanded
+
+
+define i32 @test_converting_multiple_operands() {
+  ret i32 add (i32 ptrtoint (i32* @tvar to i32),
+               i32 ptrtoint (i32* @tvar to i32))
+}
+; CHECK: define i32 @test_converting_multiple_operands()
+; CHECK: %expanded1 = ptrtoint i32* @tvar to i32
+; CHECK: %expanded = add i32 %expanded1, %expanded1
+; CHECK: ret i32 %expanded
+
+
+define i32 @test_allocating_new_var_name(i32 %expanded) {
+  %result = add i32 %expanded, ptrtoint (i32* @tvar to i32)
+  ret i32 %result
+}
+; CHECK: define i32 @test_allocating_new_var_name(i32 %expanded)
+; CHECK: %expanded1 = ptrtoint i32* @tvar to i32
+; CHECK: %result = add i32 %expanded, %expanded1
+; CHECK: ret i32 %result
+
+
+define i8* @test_converting_bitcast() {
+  ret i8* bitcast (i32* @tvar to i8*)
+}
+; CHECK: define i8* @test_converting_bitcast()
+; CHECK: %expanded = bitcast i32* @tvar to i8*
+; CHECK: ret i8* %expanded
+
+
+define i32* @test_converting_getelementptr() {
+  ; Use an index >1 to ensure that "inbounds" is not added automatically.
+  ret i32* getelementptr (i32* @tvar, i32 2)
+}
+; CHECK: define i32* @test_converting_getelementptr()
+; CHECK: %expanded = getelementptr i32* @tvar, i32 2
+; CHECK: ret i32* %expanded
+
+
+; This is identical to @test_converting_getelementptr().
+; We need to check that both copies of getelementptr are fixed.
+define i32* @test_converting_getelementptr_copy() {
+  ret i32* getelementptr (i32* @tvar, i32 2)
+}
+; CHECK: define i32* @test_converting_getelementptr_copy()
+; CHECK: %expanded = getelementptr i32* @tvar, i32 2
+; CHECK: ret i32* %expanded
+
+
+define i32* @test_converting_getelementptr_inbounds() {
+  ret i32* getelementptr inbounds (i32* @tvar, i32 2)
+}
+; CHECK: define i32* @test_converting_getelementptr_inbounds()
+; CHECK: %expanded = getelementptr inbounds i32* @tvar, i32 2
+; CHECK: ret i32* %expanded
+
+
+define i32* @test_converting_phi(i1 %cmp) {
+entry:
+  br i1 %cmp, label %return, label %else
+
+else:
+  br label %return
+
+return:
+  %result = phi i32* [ getelementptr (i32* @tvar, i32 1), %entry ], [ null, %else ]
+  ret i32* %result
+}
+; The converted ConstantExprs get pushed back into the PHI node's
+; incoming block, which might be suboptimal but works in all cases.
+; CHECK: define i32* @test_converting_phi(i1 %cmp)
+; CHECK: entry:
+; CHECK: %expanded = getelementptr inbounds i32* @tvar, i32 1
+; CHECK: else:
+; CHECK: return:
+; CHECK: %result = phi i32* [ %expanded, %entry ], [ null, %else ]
+
+
+@addr1 = global i8* blockaddress(@test_converting_phi_with_indirectbr, %return)
+@addr2 = global i8* blockaddress(@test_converting_phi_with_indirectbr, %else)
+define i32* @test_converting_phi_with_indirectbr(i8* %addr) {
+entry:
+  indirectbr i8* %addr, [ label %return, label %else ]
+
+else:
+  br label %return
+
+return:
+  %result = phi i32* [ getelementptr (i32* @tvar, i32 1), %entry ], [ null, %else ]
+  ret i32* %result
+}
+; CHECK: define i32* @test_converting_phi_with_indirectbr(i8* %addr)
+; CHECK: entry:
+; CHECK: %expanded = getelementptr inbounds i32* @tvar, i32 1
+; CHECK: return:
+; CHECK: %result = phi i32* [ %expanded, %entry ], [ null, %else ]
+
+
+; This tests that ExpandTlsConstantExpr correctly handles a PHI node
+; that contains the same ConstantExpr twice.  Using
+; replaceAllUsesWith() is not correct on a PHI node when the new
+; instruction has to be added to an incoming block.
+define i32 @test_converting_phi_twice(i1 %arg) {
+  br i1 %arg, label %iftrue, label %iffalse
+iftrue:
+  br label %exit
+iffalse:
+  br label %exit
+exit:
+  %result = phi i32 [ ptrtoint (i32* @tvar to i32), %iftrue ],
+                    [ ptrtoint (i32* @tvar to i32), %iffalse ]
+  ret i32 %result
+}
+; CHECK: define i32 @test_converting_phi_twice(i1 %arg)
+; CHECK: iftrue:
+; CHECK: %expanded{{.*}} = ptrtoint i32* @tvar to i32
+; CHECK: iffalse:
+; CHECK: %expanded{{.*}} = ptrtoint i32* @tvar to i32
+; CHECK: exit:
+; CHECK: %result = phi i32 [ %expanded1, %iftrue ], [ %expanded, %iffalse ]
+
+
+define i32 @test_converting_phi_multiple_entry(i1 %arg) {
+entry:
+  br i1 %arg, label %done, label %done
+done:
+  %result = phi i32 [ ptrtoint (i32* @tvar to i32), %entry ],
+                    [ ptrtoint (i32* @tvar to i32), %entry ]
+  ret i32 %result
+}
+; CHECK: define i32 @test_converting_phi_multiple_entry(i1 %arg)
+; CHECK: %result = phi i32 [ %expanded, %entry ], [ %expanded, %entry ]